Aquatic spraying operations
Spraying operations under Resource Consent 124871
Every year Waikato Regional Council carries out targeted spray operations to control invasive pest plants growing in our rivers, lakes and wetlands.
This work is important to protect the environment – and in particular agricultural production – from the impacts of these pest plants, as well as to improve biodiversity.
Resource consent for spraying agrichemicals
Council holds a resource consent for the application of agrichemicals to air where they may enter water and the coastal marine area within the Waikato region.
This consent allows the use of specific herbicides for controlling pest plants that cannot generally be controlled with glyphosate.
Consent number: 124871
Consent description: Aerial application of agrichemicals to air where it may enter water and the coastal marine area within the Waikato region.
What pest plants are we controlling?
The pest plants to be controlled include, but are not limited to the list below. These plants all grow in and around aquatic or marine areas, which means the herbicides we use may enter water.
Herbicides
The resource consent permits the use of the following herbicides.
Spraying will be by knapsack, hand spray equipment (e.g. gun and hose/mist blower) or helicopter using low drift nozzles.
| Active ingredient | Example brand name |
| Haloxyfop-R-methyl | Agpro Haloxyfop 100, Gallant™ Ultra |
| Imazapyr isopropylamnine | Unimaz™ 250 SL |
| metsulfuron-methyl | Agpro Meturon®, Associate® 600WDG, Escort®, |
| Triclopyr trimethylamine salt | Garlon™ 360 |
| Polyether modified polysiloxane | Agpro Organosilicone, Pulse penetrant |
Note: Glyphosate use is a permitted activity in the Waikato Regional Plan.
Where are we spraying?
View our map of operational areas. Operational areas are shown on the map with purple shading.
Use the Search bar in the top left-hand corner to search for your address and see where spraying is happening in relation to your property.
When are we spraying?
Application may occur at any time during daylight hours, providing weather and tide conditions are suitable.
As these pest plants are difficult to control, two to three follow-up applications may occur over the next 12 months. It is unlikely that spraying will occur during duck shooting season. There will be no spraying on public holidays.
For more details, see the list of scheduled spraying operations on this page.
Register for notifications
You can be notified by email or text message of specific times when spraying is happening near your property.
Use the map to identify the operational area you want to be notified for. Click on the area and then click "Sign up for notifications". This will direct you to an online form to register for notification.
Scheduled herbicide control operations
Below is a list of scheduled spraying operations. This list will be updated regularly so please check this page for updates.
| Date | Location | Control type | Herbicide | Target pest plants | Contact |
|---|---|---|---|---|---|
|
30 April – 21 May 2024 (weather permitting) |
Hall Road Wetland |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
30 April – 21 May 2024 (weather permitting) |
Stream near Wairere Drive, Logan Court, Milbrook Place |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
30 April – 30 April 2024 (weather permitting) |
Lincoln Street Drain to Kahikatea Road Drain |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
30 April – 30 April 2024 (weather permitting) |
Chartwall Gully |
Knapsack, Mist blower |
Metsulfuron |
Yellow flag iris |
Hamish Hodgson on 021569206 |
|
29 April – 20 May 2024 (weather permitting) |
Sommerton Ponds and Kirikiriroa Stream |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
29 April – 29 April 2024 (weather permitting) |
Stream - corner Gordonton-Puketaha Road |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
29 April 2024 - 17 May 2024 (weather permitting) |
Waikato River and Mystery Creek |
Knapsack, Gun and hose |
Metsulfuron, Glyphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
29 April 2024 - 17 May 2024 (weather permitting) |
Aotea Harbor - Aotea Road |
Knapsack, Gun and hose, Mist blower |
Metsulfuron, Glyphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
29 April 2024 - 17 May 2024 (weather permitting) |
Kawhia Harbor - Hikuparea Road |
Knapsack, Gun and hose, Mist blower |
Metsulfuron, Glyphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
29 April 2024 - 18 May 2024 (weather permitting) |
Te Otamanui Lagoon - Te Kowhai South |
Knapsack, Gun and hose |
Metsulfuron |
Senegal tea |
Frances McKinnon on 0273308016 |
|
22 April – 6 May 2024 (weather permitting) |
Waimakariri River between SH5 and Waihou River confluence |
Knapsack |
Haloxyfop |
African Feather Grass |
Heidi Pene on 0272486447 |
|
21 April – 3 May 2024 (weather permitting) |
Waihou River Turua, from Hikutaia Cut to Kopu (True Right) |
Gun and hose |
Haloxyfop |
Manchurian wild rice, Spartina |
Heidi Pene on 0272486447 |
|
22 April 2024 - 30 April 2024 (weather permitting) |
Lower Ohinemuri River |
Mist blower |
Metsulfuron |
Alligator weed |
Philip Mabin on 021502099 |
|
17 April 2024 - 10 May 2024 (weather permitting) |
Tuhikaramea Stream |
Knapsack, Gun and hose, Mist blower |
Metsulfuron, Glyphosate |
Yellow flag iris |
Frances McKinnon on 0273308016 |
|
16 April 2024 - 7 May 2024 (weather permitting) |
Port Waikato |
Knapsack, Gun and hose |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
16 April 2024 - 6 May 2024 (weather permitting) |
Huntly to Whangape Stream |
Mist blower |
Metsulfuron |
Alligator weed |
Philip Mabin on 021502099 |
|
11 April 2024 - 3 May 2024 (weather permitting) |
Whangaipeteki Stream at Hill Road |
Knapsack, Gun and hose |
Metsulfuron |
Climbing Spindleberry |
Frances McKinnon on 0273308016 |
|
11 April 2024 - 3 May 2024 (weather permitting) |
Pond at Clark Lane |
Knapsack, Gun and hose |
Metsulfuron, Imaxapyr, Glyphosate |
Sagittaria |
Frances McKinnon on 0273308016 |
|
11 April 2024 - 3 May 2024 (weather permitting) |
Cambridge golf course pond |
Knapsack, Gun and hose |
Metsulfuron, Imaxapyr, Glyphosate |
Water poppy, Sagittaria |
Frances McKinnon on 0273308016 |
|
11 April 2024 - 3 May 2024 (weather permitting) |
Ruapuke Stream, Toreparu Stream, Taharoa Beach, TM Station Drains, Tauhua Stream, Turiakina Stream |
Knapsack, Mist blower, Gun and hose |
Metsulfuron, Glyphosate |
Alligator weed, Yellow flag iris |
Frances McKinnon on 0273308016 |
|
11 April – 24 April 2024 (weather permitting) |
Horahora of farm wetlands, Maungatautari Road |
Gun and hose |
Haloxyfop |
Manchurian wild rice |
Heidi Pene on 0272486447 |
|
8 April – 30 April 2024 (weather permitting) |
Waikato River - Port Waikato to Tuaranginui |
Knapsack, Gun & hose, Mist blower |
Metsulfuron |
Water poppy |
Hamish Hodgson on 021569206 |
|
7 April – 22 April 2024 (weather permitting) |
Waihou River from Hikutaia cut to Kopu Bridge - True right |
Gun and hose |
Haloxyfop |
Manchurian wild rice, Spartina |
Heidi Pene on 0272486447 |
|
1 April – 15 April 2024 (weather permitting) |
Lake Rotokaeo |
Knapsack, Gun & hose, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
1 April - 22 April 2024 (weather permitting) |
Otaua Road Drains & Crouch Road Drains |
Gun and hose |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
25 March - 15 April 2024 (weather permitting) |
Komakorau stream |
Knapsack, Gun and hose |
Metsulfuron |
Alligator weed, Yellow flag iris |
Reuben Libline on 021972962 |
|
25 March – 16 April 2024 (weather permitting) |
Mangaonua Stream |
Knapsack, Mist blower, Gun and hose |
Metsulfuron, Glyphosate |
Alligator weed, Yellow flag iris |
Frances McKinnon on 0273308016 |
|
25 March – 15 April 2024 (weather permitting) |
Waikato River, Huntly to Ohinewai |
Gun and hose, Mist-blower |
Metsulfuron |
Alligator weed |
Philip Mabin on 021502099 |
|
21 March – 31 March 2024 (weather permitting) |
Tauranga hi to Tuakau Bridge |
Knapsack, Gun & hose |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
21 March – 31 March 2024 (weather permitting) |
Port Waikato to Tuaranginui |
Knapsack, Gun & hose |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
18 March – 8 April 2024 (weather permitting) |
Aotea Harbour & Kawhia Harbour |
Knapsack, Mist blower, Gun and hose |
Metsulfuron, Glyphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
18 March – 15 April 2024 (weather permitting) |
Waikato River - Mercer to Hampton Downs |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed, Yellow flag iris |
Hamish Hodgson on 021569206 |
|
18 March – 8 April 2024 (weather permitting) |
Waikato River - Hampton Downs to Whangape Stream |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed, Yellow flag iris |
Hamish Hodgson on 021569206 |
|
18 March – 8 April 2024 (weather permitting) |
1589 SH25 Tairua-Whitianga Highway |
Knapsack, Gun and hose |
Metsulfuron, Glyphosate |
Water poppy |
Benson Lockhart on 021618364 |
|
7 March – 28 March 2024 (weather permitting) |
Whangamarino Wetland and River |
Helicopter |
Metsulfuron |
Alligator weed |
Craig Purvis on 0275554441 |
|
4 March – 31 March 2024 (weather permitting) |
Hall Road Wetland |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
4 March – 31 March 2024 (weather permitting) |
Sandford Gully, Glenvoew |
Knapsack |
Imazapyr |
Japanese knotweed |
Hamish Hodgson on 021569206 |
|
4 March – 31 March 2024 (weather permitting) |
Lake Rotokaeo |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Mexican water lily |
Hamish Hodgson on 021569206 |
|
7 March - 21 March 2024 (weather permitting) |
Waihou River from Hikutaia Cut to Kopu - True left |
Gun and hose |
Haloxyfop |
Manchurian wild rice, Spartina |
Heidi Pene on 0272486447 |
|
4 March – 31 March 2024 (weather permitting) |
Pond and Stream - Pukekawa |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Mexican water lily |
Hamish Hodgson on 021569206 |
|
1 March - 22 March 2024 (weather permitting) |
Huntly Ponds |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Alligator weed, Yellow flag iris |
Reuben Libline on 021972962 |
|
29 February – 15 March 2024 (weather permitting) |
Pond and Stream - Pukekawa |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
23 February – 15 March 2024 (weather permitting) |
Mangakaware Stream and Wetland |
Knapsack, Gun and hose, Mist blower |
Metsulfuron, Glyphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
22 February 2024 to 13 March 2024 (weather permitting) |
Whangape Stream to Tuakau |
Gun and hose, mist-blower, knapsack |
Metsulfuron |
Alligator weed |
Philip Mabin 021502099 |
|
19 February - 11 March 2024 (weather permitting) |
Awaroa River |
Knapsack |
Metsulfuron |
Senegal tea |
Reuben Libline on 021972962 |
|
13 February – 23 February 2024 (weather permitting) |
Taharoa Beach and TM Station Drains |
Knapsack, Gun and hose, Mist blower |
Metsulfuron, Glyphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
16 February - 8 March 2024 (weather permitting) |
Rutherford Road Drains, Mangawara |
Knapsack, Gun and hose |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
16 February - 8 March 2024 (weather permitting) |
Matahuru Stream |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
19 February – 15 March 2024 (weather permitting) |
Te Mata Stream and Opotoru River |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Yellow flag iris |
Frances McKinnon on 0273308016 |
|
7 February - 28 February 2024 (weather permitting) |
Waihou River True left, Hikutaia Cut to Abbatoir Road Turua |
Gun and hose |
Haloxyfop |
Manchurian wild rice, Spartina |
Heidi Pene on 0272486447 |
|
7 February - 28 February 2024 (weather permitting) |
Waihou River True right Hikutaia Cut to Kopu |
Gun and hose |
Haloxyfop |
Manchurian wild rice, Spartina |
Heidi Pene on 0272486447 |
|
31 January – 23 February 2024 (weather permitting) |
Te Otamanui Lagoon |
Helicopter,Knapsack, Gun and hose, Mist blower |
Metsulfuron, Triclopyr, Gylphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
30 January – 20 February 2024 (weather permitting) |
Lincoln Street Drain to Kahikatea Road Drain |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
30 January – 20 February 2024 (weather permitting) |
Stream near Wairere Drive, Logan Court, Milbrook Place |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
30 January – 20 February 2024 (weather permitting) |
Stream corner Gordonton-Puketaha |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
30 January – 20 February 2024 (weather permitting) |
Somerton Ponds and Kirikiriroa Stream - Thomas Road |
Knapsack, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
30 January - 19 February 2024 (weather permitting) |
Lower Waikato River – Huntly to Tuakau, including Te Onetea Stream and Whangape Stream |
Gun and hose, mist-blower, knapsack |
Metsulfuron |
Alligator weed |
Philip Mabin 021502099 |
|
30 January - 16 February 2024 (weather permitting) |
Waimakariri and Waihou River from SH 5 to Okoroire Hotel |
Knapsack |
Haloxyfop |
African feather grass |
Heidi Pene on 0272486447 |
|
30 January - 13 February 2024 (weather permitting) |
Ruahorehore Stream |
Knapsack |
Metsulfuron |
Alligator weed |
Heidi Pene on 0272486447 |
|
30 January - 6 February 2024 (weather permitting) |
Waihou River True left from Hikutaia Cut to Kopu |
Gun and hose |
Haloxyfop |
Manchurian wild rice, Spartina |
Heidi Pene on 0272486447 |
|
22 January – 12 February 2024 (weather permitting) |
Ngaawapurua Rapids to Broadlands |
Knapsack, Mist blower |
Metsulfuron |
Yellow flag iris |
Eliah Murdoch-Pike on 021318195 |
|
17 January – 14 February 2024 (weather permitting) |
Lake Whangape and Whangape Stream |
Helicopter |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
15 January - 5 February 2024 (weather permitting) |
Huriwai River |
Knapsack, Gun and hose |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
22 January – 12 February 2024 (weather permitting) |
Aotea Harbour and Kawhia Harbour |
Knapsack, Gun and hose, Mist blower |
Metsulfuron, Gylphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
22 January – 12 February 2024 (weather permitting) |
Taharoa Beach, TM Station Drains, Tauhua Stream, Turiakina Stream and Tareparu Stream |
Knapsack, Gun and hose |
Metsulfuron, Gylphosate |
Alligator weed, Yellow flag iris |
Frances McKinnon on 0273308016 |
|
9 January - 23 January 2024 (weather permitting) |
Waihou River True left from Hikutaia Cut to Kopu |
Gun and hose |
Haloxyfop |
Manchurian wild rice, Spartina |
Heidi Pene on 0272486447 |
|
8 January - 29 January 2024 (weather permitting) |
Whangamarino Wetland and Maramarua River, Kimihia Wetland |
Helicopter |
Metsulfuron |
Alligator weed, Yellow flag iris |
Craig Purvis on 0275554441 |
|
8 January – 31 January 2024 (weather permitting) |
Te Otamanui Lagoon |
Helicopter, Knapsack, Gun and hose, Mist blower |
Metsulfuron, Gylphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
8 January – 29 January 2024 (weather permitting) |
Port Waikato to Tauranganui and Tauranganui to Tuakau Bridge |
Helicopter, Gun and hose, Mist blower |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
8 January - 28 January 2024 (weather permitting) |
Lower Waikato River, Ngaruawahia to Tuakau, including Lake Whangape and Whangape Stream |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Alligator weed, Yellow flag iris |
Philip Mabin on 021502099 |
|
27 December 2023 – 17 January 2024 (weather permitting) |
Komakorau Stream |
Knapsack |
Metsulfuron |
Alligator weed, Yellow flag iris |
Reuben Libline on 021972962 |
|
27 December 2023 – 17 January 2024 (weather permitting) |
Waikawau Stream |
Knapsack, Gun and hose |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
27 December 2023 – 17 January 2024 (weather permitting) |
Kaawa Stream |
Knapsack, Gun and hose |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
27 December 2023 – 17 January 2024 (weather permitting) |
Waikaretu Stream Mouth |
Knapsack |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
27 December 2023 – 17 January 2024 (weather permitting) |
Waikorea Stream |
Knapsack |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
27 December 2023 – 17 January 2024 (weather permitting) |
Tauterei Stream |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
18 December – 22 December 2023 (weather permitting) |
Mangakaware Stream and Wetland |
Knapsack, Gun and hose, Mist blower |
Metsulfuron, Gylphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
14 December – 22 December 2023 (weather permitting) |
Wetland - Private property SH 26 Puriri |
Knapsack, Gun and hose |
Haloxyfop |
Manchurian wild rice |
Heidi Pene on 0272486447 |
|
14 December – 22 December 2023 (weather permitting) |
Horahora wetlands - Private property Maungatautari Road |
Knapsack, Gun and hose |
Haloxyfop |
Manchurian wild rice |
Heidi Pene on 0272486447 |
|
13 December 2023 – 3 January 2024 (weather permitting) |
Whangamaire Stream, Stokes Road, Taupiri |
Knapsack, Gun and hose |
Metsulfuron |
Yellow flag iris |
Reuben Libline on 021972962 |
|
13 December 2023 – 3 January 2024 (weather permitting) |
Murphy Lane Wetland, Taupiri |
Knapsack, Gun and hose |
Metsulfuron |
Alligator weed, Yellow flag iris |
Reuben Libline on 021972962 |
|
13 December 2023 – 3 January 2024 (weather permitting) |
Huntly ponds on the corner of Tainui Bridge Road and Tumate Mahuta Drive |
Gun and hose |
Metsulfuron |
Alligator weed, Yellow flag iris |
Reuben Libline on 021972962 |
|
11 December – 24 December 2023 (weather permitting) |
Lake Rotoroa |
Knapsack |
Metsulfuron |
Alligator weed, Yellow flag iris, Water poppy |
Hamish Hodgson on 021569206 |
|
11 December – 23 December 2023 (weather permitting) |
Waikato River - Ngaawapurua Rapids to Ohakuri Road includes Lake Ohakuri to Waikite Valley Road |
Knapsack, Mist blower |
Metsulfuron |
Yellow flag iris |
Eliah Murdoch-Pike on 021318195 |
|
11 December – 25 December 2023 (weather permitting) |
Kawhia Harbour - Hikuparea Road and Aotea Harbour - Aoteas Road |
Knapsack, Gun and hose, Mist blower |
Metsulfuron, Gylphosate |
Alligator weed |
Frances McKinnon on 0273308016 |
|
11 December – 22 December 2023 (weather permitting) |
Waihou River True left from the Hikutaia Cut to Kopu bridge |
Gun and hose |
Haloxyfop |
Alligator weed, Spartina |
Heidi Pene on 0272486447 |
|
7 December – 22 December 2023 (weather permitting) |
Te Aroha pond and Drain - Gordon Ave to Pooles Rd |
Knapsack |
Metsulfuron |
Alligator weed |
Heidi Pene on 0272486447 |
|
7 December – 22 December 2023 (weather permitting) |
Ohinemuri River from Waihi Weir to Paeroa Township |
Knapsack |
Metsulfuron |
Alligator weed |
Heidi Pene on 0272486447 |
|
7 December – 22 December 2023 (weather permitting) |
Ohinemuri River from Ruahorehore Stream to Waihi town weir |
Knapsack |
Metsulfuron |
Alligator weed |
Heidi Pene on 0272486447 |
|
7 December – 22 December 2023 (weather permitting) |
Drains at Thames Motor X track |
Knapsack |
Metsulfuron |
Alligator weed |
Heidi Pene on 0272486447 |
|
7 December – 22 December 2023 (weather permitting) |
Ruahorehore stream Waihi |
Knapsack |
Metsulfuron |
Alligator weed |
Heidi Pene on 0272486447 |
|
7 December – 22 December 2023 (weather permitting) |
Drain on Private property - Kaihere |
Knapsack |
Metsulfuron |
Alligator weed |
Heidi Pene on 0272486447 |
|
5 December – 26 December 2023 (weather permitting) |
Komakorau Stream, 1478 Gordonton Road to Henry Road |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Alligator weed, Yellow flag iris |
Reuben Libline on 021972962 |
|
5 December – 26 December 2023 (weather permitting) |
Awaroa River, Waiuku-Otaua Road |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Senegal tea |
Reuben Libline on 021972962 |
|
6 December - 22 December 2023 (weather permitting) |
Lower Waikato River, Horotiu to Tuakau, Whangape stream, Lower Ohinemuri River, Lower Waipa River |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Alligator weed, Yellow flag iris |
Philip Mabin on 021502099 |
|
4 December – 20 December 2023 (weather permitting) |
Awaroa River Waiuku - Waiuku-Otaua Road |
Knapsack, Gun and hose, Mist blower |
Metsulfuron |
Senegal tea |
Reuben Libline on 021972962 |
|
29 November – 20 December 2023 (weather permitting) |
Port Waikato |
Knapsack |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
29 November – 20 December 2023 (weather permitting) |
Pond at 5343 SH31, Pond at Redwood Park Otorohanga, Tainui St & Rerenga St drain |
Knapsack |
Imazapyr |
Rough horsetail, Field horsetail |
Frances McKinnon on 0273308016 |
|
29 November – 20 December 2023 (weather permitting) |
Ruapuke Stream, Toreparu Stream, Matauwai Stream Taharoa, Wainui Stream Taharoa, Coastal Ag drains, Tauhua Stream, Turiakina Stream |
Knapsack |
Metsulfuron, Glyphosate |
Alligator weed, Yellow flag iris |
Frances McKinnon on 0273308016 |
|
27 November – 18 December 2023 (weather permitting) |
Rutherford Road Drains, Mangawara |
Gun and hose |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
27 November – 18 December 2023 (weather permitting) |
Aka Aka Otaua Drains |
Gun and hose |
Metsulfuron |
Alligator weed |
Reuben Libline on 021972962 |
|
27 November – 2 December 2023 (weather permitting) |
Waihou River Turua from Hikutaia Cut to Kopu - True left |
Gun and hose |
Haloxyfop |
Manchurian wild rice, Spartina |
Heidi Pene on 0272486447 |
|
21 November – 15 December 2023 (weather permitting) |
Whangamarino Wetland and River and Maramarua River |
Helicopter |
Metsulfuron |
Alligator weed |
Hamish Hodgson on 021569206 |
|
20 November – 15 December 2023 (weather permitting) |
Huntly Ash Ponds |
Helicopter |
Metsulfuron |
Alligator weed, Yellow flag iris |
Hamish Hodgson on 021569206 |
|
20 November – 15 December 2023 (weather permitting) |
Kimihia Wetland |
Helicopter |
Metsulfuron |
Alligator weed, Yellow flag iris |
Hamish Hodgson on 021569206 |
Past herbicide spraying operations
You can see details below of herbicide spraying operations that have been carried out over the past year. If you would like details of earlier spraying operations, please contact us.
| Date | Location | Control type | Herbicide | Target pest plants |
|---|---|---|---|---|
| 20 November – 15 December 2023 (weather permitting) | Waikato River - Whangape Stream to Ohinewai | Helicopter | Metsulfuron | Alligator weed, Yellow flag iris |
| 27 November – 22 December 2023 (weather permitting) | Mangaonua Stream, Newstead | Knapsack, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 16 November – 7 December 2023 (weather permitting) | Matahuru Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 17 November – 8 December 2023 (weather permitting) | Lincoln Street Drain to Kahikatea Road Drain | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 17 November – 8 December 2023 (weather permitting) | Managakotukutuku Stream Peacocoks | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 17 November – 8 December 2023 (weather permitting) | Hall Road Wetland | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 17 November – 8 December 2023 (weather permitting) | Acacia Cresent Glenview | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 16 November – 7 December 2023 (weather permitting) | Rutherfurd Road Drains | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 14 November – 5 December 2023 (weather permitting) | Horotiu to Tuakau. Lake Whangape and Whangape Stream. Lower Ohinemuri River | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 13 Nov – 4 Dec 2023 (weather permitting) | Lake Rotoroa | Knapsack, Mist blower | Metsulfuron | Yellow flag iris, Mexican water lily |
| 13 November – 4 December 2023 (weather permitting) | Stream - corner Gordonton-Puketaha Road | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 13 November – 4 December 2023 (weather permitting) | Somerton Ponds and Kirikiriroa Stream - Thomas Road | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 1 November – 22 November 2023 (weather permitting) | Lake Whangape | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 24 October – 13 November 2023 (weather permitting) | Lower Waikato River, Horotiu to Mercer, Lower Waipa River, Lake Whangpe and Whangape Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 17 October – 7 November 2023 (weather permitting) | Lake Ohinemuri River | Mist blower | Metsulfuron | Alligator weed |
| 3 October – 23 October 2023 (weather permitting) | Lower Waikato River, Huntly to Mercer and Whangape Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 3 October – 23 October 2023 (weather permitting) | Horotiu to Huntly (Tainui Bridge), Waipa River, Ngaruawahia to Te Kowhai | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 20 September – 11 October 2023 (weather permitting) | Lower Ohinemuri | Mist blower | Metsulfuron | Alligator weed |
| 20 September – 3 October 2023 (weather permitting)
|
Horotiu to Tainui Bridge, Lower Waipa | Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
|
13 September – 4 October 2023 (weather permitting)
|
Tainui Bridge to Mercer (Lower Waikato River) and Whangape Stream | Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
|
13 September – 4 October 2023 (weather permitting)
|
Ruapuke Stream mouth | Knapsack | Metsulfuron | Alligator weed, Yellow flag iris |
| 26 August – 16 September 2023 (weather permitting) | Ngaruawahia to Ohinewai | Mist blower | Metsulfuron | Alligator weed |
| 18 August – 8 September 2023 (weather permitting) | Lower Waikato, Ohinewai to Mercer. Whangape Stream | Mist blower | Metsulfuron | Alligator weed |
| 17 August – 7 September 2023 (weather permitting) | Pond at Raynes Road, Rukuhia | Knapsack, Gun and hose, Mist blower | Metsulfuron | Yellow flag iris |
| 17 August – 7 September 2023 (weather permitting) | Pukerimu Lane Ponds | Knapsack, Gun and hose, Mist blower | Metsulfuron | Yellow flag iris |
| 17 August – 7 September 2023 (weather permitting) | Paratawa Stream Old Mountain Road | Knapsack, Gun and hose, Mist blower | Metsulfuron | Yellow flag iris |
| 17 August – 7 September 2023 (weather permitting) | Tuhikaramea Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Yellow flag iris |
| 17 August – 7 September 2023 (weather permitting) | Pond and Stream at Pirongia Road | Knapsack, Gun and hose, Mist blower | Metsulfuron | Yellow flag iris |
| 14 August – 4 September 2023 (weather permitting) | Whangamaire Stream Taupiri | Knapsack, Mist blower | Metsulfuron | Yellow flag iris |
| 14 August – 4 September 2023 (weather permitting) | Waikato River - Hampton Downs to Whangape Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 14 August – 4 September 2023 (weather permitting) | Whangape stream to Ohinewai | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 14 August – 4 September 2023 (weather permitting) | Murphy Lane Wetland Taupiri | Knapsack, Mist blower | Metsulfuron | Yellow flag iris |
| 14 August – 4 September 2023 (weather permitting) | Huntly Ponds | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 31 July – 21 August 2023 (weather permitting) | Horotiu to Ohinewai | Mist blower | Metsulfuron | Alligator weed |
| 8 July – 29 July 2023 (weather permitting) | Lower Waikato River. Horotiu to Mercer | Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 10 June – 1 July 2023 (weather permitting) | Waikato river delta. Tuakau to Port Waikato | Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 29 June – 30 June 2023 (weather permitting) | Piako River from Awaiti Canal to Firth of Thames | Knapsack, Mist blower | Haloxyfop | Manchurian wild rice, Spartina |
| 15 June – 29 June 2023 (weather permitting) | Tauranga Road yellow flag - Private property | Knapsack, Gun and hose | Metsulfuron | Yellow flag iris |
| 15 June – 29 June 2023 (weather permitting) | Waihi camp ground pond | Knapsack | Metsulfuron | Yellow flag iris |
| 14 June – 28 June 2023 (weather permitting) | Waihi township creeks from Kent St to Clark St | Knapsack | Metsulfuron | Yellow flag iris |
| 7 June – 28 June 2023 (weather permitting) | Cambridge Golf course, Pond at Clarke Lane, Te Mawhai Rd, TM Station, Turiakina and Tahuna Stream | Knapsack, Gun and hose | Metsulfuron | Alligator weed, Water poppy, Sagittaria |
| 7 June – 28 June 2023 (weather permitting) | Lower Waikato River and lower Waipa River | Mist blower | Metsulfuron | Alligator weed |
| 7 June – 30 June 2023 (weather permitting) | Mangaonua Stream | Knapsack, Mist blower | Metsulfuron, Glyphosate | Alligator weed |
| 6 June – 20 June 2023 (weather permitting) | Waihou River between Paeroa and the Hikutaia Cut | Gun and hose | Haloxyfop | Manchurian wild rice |
| 31 May – 14 June 2023 (weather permitting) | Ohinemuri River from Waihi Weir to Waikino | Knapsack | Metsulfuron | Alligator weed |
| 31 May – 14 June 2023 (weather permitting) | Kereone Road to Cussen Road drain | Knapsack | Metsulfuron | Yellow flag iris |
| 31 May – 14 June 2023 (weather permitting) | Maungahaumia Stream Matuku Road to Morrinsville Tahuna Road | Knapsack | Metsulfuron | Yellow flag iris |
| 31 May – 14 June 2023 (weather permitting) | Tauranga Road, Matamata | Knapsack, Gun and hose | Metsulfuron | Yellow flag iris |
| 26 May – 16 June 2023 (weather permitting) | Wetland at SH 26 Puriri | Knapsack, Gun and hose | Haloxyfop | Manchurian wild rice |
| 26 May – 16 June 2023 (weather permitting) | Horahora wetlands, Maungtautari Road | Gun and hose | Haloxyfop | Manchurian wild rice |
| 8 May – 29 May 2023 (weather permitting) | 1589 SH25 Whitianga-Tairua Highway | Knapsack, Gun and hose | Metsulfuron, Glyphosate | Water poppy |
| 8 May - 29 May 2023 (weather permitting) | River Road Landfill Ponds | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 8 May - 29 May 2023 (weather permitting) | Hutchinson Road Ponds | Knapsack | Metsulfuron | Alligator weed |
| 8 May - 29 May 2023 (weather permitting) | Somerton Ponds and Kirikiriroa Stream - Thomas Road | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 8 May - 29 May 2023 (weather permitting) | Stream - corner Gordonton-Puketaha Road | Knapsack | Metsulfuron | Alligator weed, Yellow flag iris |
| 8 May - 29 May 2023 (weather permitting) | Managakotukutukutu Stream, Peacockes | Knapsack | Metsulfuron | Alligator weed |
| 8 May - 29 May 2023 (weather permitting) | Lincoln Street Drain to Kahikatea Road Drain | Knapsack | Metsulfuron | Alligator weed |
| 26 April – 16 May 2023 (weather permitting) | Te Otamanui Lagoon and Te Kowhai South | Knapsack, Gun and hose, Mist blower | Metsulfuron, Glyphosate | Alligator weed, Senegal tea |
| 24 April – 8 May 2023 (weather permitting) | 1589 SH25 Whitianga-Tairua Highway | Knapsack, Gun and hose | Metsulfuron, Glyphosate | Water poppy |
| 20 April – 19 May 2023 (weather permitting) | West Coast Alligator Weed Sites | Knapsack, Gun and hose | Metsulfuron | Alligator weed, Yellow flag iris |
| 19 April – 3 May 2023 (weather permitting) | Waihou River True left from the Hikutaia Cut to Kopu Bridge | Gun and hose | Haloxyfop | Manchurian wild rice, Spartina |
| 17 April – 5 May 2023 (weather permitting) | Horahora farmland wetlands Maungatautari Road | Knapsack, Gun and hose | Haloxyfop | Manchurian wild rice |
| 17 April – 1 May 2023 (weather permitting) | Ohinemuri River from Baxter Rd to the Waihi Weir | Knapsack | Metsulfuron | Alligator weed |
| 17 April – 28 April 2023 (weather permitting) | Lower Waikato River (Ngaruawahia to Hamptom Downs), Waipa River | Mist blower | Metsulfuron | Alligator weed |
| 17 April 2023 (weather permitting) | Waikato River - Fairfield Bridge to Ann Street | Knapsack | Metsulfuron, Glyphosate | Alligator weed, Yellow flag iris |
| 6 April – 27 April 2023 (weather permitting) | Te Otamanui Lagoon - Te Kowhai | Knapsack, Gun and hose, Mist blower | Metsulfuron, Glyphosate | Alligator weed, Senegal tea |
| 6 April – 27 April 2023 (weather permitting) | Sanford Gully, Glenview | Knapsack | Imazapyr | Japanese knotweed |
| 4 April – 6 April 2023 (weather permitting) | Ruapuke Beach stream | Knapsack | Metsulfuron | Alligator weed, Yellow flag iris |
| 4 April – 6 April 2023 (weather permitting) | Waimaori Road - Toreparu Stream | Knapsack | Metsulfuron | Alligator weed, Yellow flag iris |
| 4 April – 6 April 2023 (weather permitting) | Waimakariri and Waihou Rivers from SH5 to Okoroire | Knapsack | Haloxyfop | African feather grass |
| 3 April – 24 April 2023 (weather permitting) | 1589 SH25 Whitianga-Tairua Highway | Gun and hose | Metsulfuron, Glyphosate | Water poppy |
| 3 April – 17 April 2023 (weather permitting) | Waihou River True Right from Hikutaia Cut to Kopu | Gun and hose | Haloxyfop | Manchurian wild rice, Spartina |
| 31 March – 21 April 2023 (weather permitting) | Whangape Stream and Lake Whangape | Helicopter | Metsulfuron | Alligator weed |
| 29 March – 12 April 2023 (weather permitting) | Huntly Ponds | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 28 March – 18 April 2023 (weather permitting) | Te Mata Stream and Opotoru River | Knapsack, Gun and hose, Mist blower | Metsulfuron | Yelow flag iris |
| 22 March – 10 April 2023 (weather permitting) | Awaroa Stream | Knapsack, Mist blower | Metsulfuron | Senegal tea |
| 22 March – 10 April 2023 (weather permitting) | Komakorau Stream | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 26 March – 16 April 2023 (weather permitting) | Lower Waikato River, Huntly to Mercer, Whangape Stream | Mist blower | Metsulfuron | Alligator weed |
| 15 March - 5 April 2023 (weather permitting) | Te Otamanui Lagoon - Te Kowhai North | Helicopter, Knapsack, Gun and hose, Mist blower | Metsulfuron, Glyphosate | Alligator weed |
| 13 March - 3 April 2023 (weather permitting) | Port Waikato to Tauranganui and Tauranganui to Tuakau Bridge | Gun and hose | Metsulfuron | Alligator weed |
| 6 March - 27 March 2023 (weather permitting) | Te Onetea Stream and Lake Waikare | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 6 March - 10 March 2023 (weather permitting) | Waimakariri (SH 5 to Waihou confluence) and Waihou River, Okoroire | Knapsack | Haloxyfop | African feather grass |
| 4 March - 25 March 2023 (weather permitting) | Lower Waikato River, Huntly to Tuakau | Mist blower | Metsulfuron | Alligator weed |
| 2 March – 23 March 2023 (weather permitting) | Huntly Ponds | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 1 March - 22 March 2023 (weather permitting) | Mangakaware Stream and wetland | Knapsack, Gun and hose, MIst blower | Metsulfuron | Alligator weed |
| 23 February – 14 March 2023 (weather permitting) | Near Matauwai Stream, Taharoa and Coastal wetland near Wainui Stream, Taharoa | Knapsack, Gun and hose | Metsulfuron | Alligator weed, Yellow flag iris |
| 21 February – 13 March 2023 (weather permitting) | Aotea Road | Knapsack, Gun and hose | Metsulfuron | Alligator weed |
| 20 February – 13 March 2023 (weather permitting) | Tauterei Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 20 February – 13 March 2023 (weather permitting) | Waikorea Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 20 February – 13 March 2023 (weather permitting) | Kaawa Stream | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 20 February – 13 March 2023 (weather permitting) | Waikawau Stream | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 20 February – 13 March 2023 (weather permitting) | Huriwai River | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 20 February – 13 March 2023 (weather permitting) | Waikaretu Stream Mouth | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 10 February – 3 March 2023 (weather permitting) | Lower Waikato River. Taupiri to Whangape Stream | Mist blower | Metsulfuron | Alligator weed |
| 9 February – 2 March 2023 (weather permitting) | 57 Hikuparea Road, Kawhia | Knapsack, Gun and hose | Metsulfuron | Alligator weed |
| 9 February – 2 March 2023 (weather permitting) | Port Waikato | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 9 February – 2 March 2023 (weather permitting) | Awaroa River | Knapsack, Mist blower | Metsulfuron | Senegal tea |
| 8 February – 1 March 2023 (weather permitting) | Te Onetea Stream and Lake Waikare | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 8 February – 24 February 2023 (weather permitting) | Pooles Road and Gordon Ave drains, Te Aroha | Knapsack, Gun and hose | Metsulfuron | Alligator weed |
| 18 February – 28 February 2023 (weather permitting) | Waihou River True Left from Hikutaia to Kopu | Gun and hose | Haloxyfop | Manchurian wild rice, Spartina |
| 23 January – 13 February 2023 (weather permitting) | Waikato River - Hampton Downs to Whangape Stream and Waikato River - Whangape stream to Ohinewai | Knapsack, Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 23 January – 10 February 2023 (weather permitting) | Lake Whangape and Whangape stream. Whangamarino Wetland | Helicopter | Metsulfuron | Alligator weed |
| 19 January – 7 February 2023 (weather permitting) | Te Onetea Stream and Lake Waikare | Mist blower | Metsulfuron | Alligator weed |
| 19 January – 3 February 2023 (weather permitting) | Waihou River True Right from Hikutaia Cut to Kopu | Gun and hose | Haloxyfop | Manchurian wild rice, Spartina |
| 18 January – 8 February 2023 (weather permitting) | Tuhikaramea Stream - Livingston Road | Knapsack, Mist blower | Metsulfuron, Glyphosate | Yellow flag iris |
| 18 January – 8 February 2023 (weather permitting) | Te Pahu Road & Pond at Owen Road | Knapsack | Metsulfuron, Glyphosate | Yellow flag iris |
| 18 January – 7 February 2023 (weather permitting) | Komakorau Stream | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 17 January – 7 February 2023 (weather permitting) | Mangakaware Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron, Glyphosate | Alligator weed |
| 17 January – 7 February 2023 (weather permitting) | Pukerimu Lane, Pond & Stream Pirongia Road, Pond at Raynes Road & Te Puroa Road | Knapsack, Gun and hose | Metsulfuron, Glyphosate | Yellow flag iris |
| 17 January – 31 January 2023 (weather permitting) | Drain between Gordon Ave and Pooles Road Te Aroha | Knapsack | Metsulfuron | Alligator weed |
| 10 January – 31 January 2023 (weather permitting) | Mangaonua Stream | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 9 January – 30 January 2023 (weather permitting) | Huriwai River | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 9 January – 30 January 2023 (weather permitting) | Waikawau Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 9 January – 30 January 2023 (weather permitting) | Kaawa Stream | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 9 January – 30 January 2023 (weather permitting) | Port Waikato to Tauranganui and Tauranganui to Tuakau Bridge | Gun and hose | Metsulfuron | Alligator weed |
| 16 January – 27 January 2023 (weather permitting) | Kaihere Drain | Gun and hose | Metsulfuron | Alligator weed |
| 16 January – 27 January 2023 (weather permitting) | Rhodes Park and Thames Motocross Track | Knapsack | Metsulfuron, Brushkiller | Alligator weed |
| 9 January – 27 January 2023 (weather permitting) | River Road Landfill Ponds | Knapsack, Gun and hose and Mist blower | Metsulfuron | Alligator weed |
| 9 January – 27 January 2023 (weather permitting) | Managakotukutukutu Stream, Peacockes | Knapsack, Gun and hose and Mist blower | Metsulfuron | Alligator weed |
| 9 January – 27 January 2023 (weather permitting) | Hutchinson Road Ponds | Knapsack, Gun and hose and Mist blower | Metsulfuron | Alligator weed |
| 9 January – 27 January 2023 (weather permitting) | Stream - corner Gordonton & Puketaha Road | Knapsack, Gun and hose and Mist blower | Metsulfuron | Alligator weed |
| 9 January – 27 January 2023 (weather permitting) | Lincoln Street Drain to Kahikatea Road Drain | Knapsack, Gun and hose and Mist blower | Metsulfuron | Alligator weed |
| 9 January – 27 January 2023 (weather permitting) | Somerton Ponds and Kirikiriroa Stream - Thomas Road | Knapsack, Gun and hose and Mist blower | Metsulfuron | Alligator weed |
| 5 January – 26 January 2023 (weather permitting) | Lower Waikato River - Ngaruawahia to The Elbow | Mist blower | Metsulfuron | Alligator weed |
| 23 December – 13 January 2023 (weather permitting) | Waikaretu Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 22 December – 13 January 2023 (weather permitting) | Waikorea Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 22 December – 13 January 2023 (weather permitting) | Tauterei Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 7 December – 28 December 2022 (weather permitting) | Mangaonua Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 5 December – 23 December 2022 (weather permitting) | Matahuru Stream | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 2 December - 21 December 2022 (weather permitting) | Rutherfurd Road Drains, Mangawara | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 29 November – 20 December 2022 (weather permitting) | Pukerimu Lane, Te Poura Road, Old Mountain Road, Livingstone Road, Pirongia Road, Raynes Road | Knapsack, Gun and hose, Mist blower | Metsulfuron, Glyphosate | Yellow flag iris |
| 5 December – 19 December 2022 (weather permitting) | Waihou River from the Hikutaia Cut to Kopu - True Right | Gun and hose | Haloxyfop | Manchurian wild rice, Spartina |
| 28 November – 19 December 2022 (weather permitting) | Lower Waikato, Ngaruawahia to Mercer | Mist blower | Metsulfuron | Alligator weed, Water poppy |
| 28 November – 12 December 2022 (weather permitting) | Ruahorehore Stream - Waihi | Knapsack | Metsulfuron | Alligator weed |
| 16 November –7 December 2022 (weather permitting) | Huntly Ponds | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 16 November –7 December 2022 (weather permitting) | Komakorau Stream | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 16 November –7 December 2022 (weather permitting) | Whangamarie Stream, Taupiri | Knapsack, Mist blower | Metsulfuron | Yellow flag iris |
| 16 November –7 December 2022 (weather permitting) | Murphy Lane Taupiri | Knapsack, Mist blower | Metsulfuron | Yellow flag iris |
| 18 November – 9 December 2022 (weather permitting) | Whangape stream and Lake Whangape | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 9 November – 30 November 2022 (weather permitting) | River Road Landfill Ponds | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 9 November – 30 November 2022 (weather permitting) | Hutchinson Road Ponds | Knapsack, Gun and hose | Metsulfuron | Alligator weed |
| 9 November – 30 November 2022 (weather permitting) | Managakotukutuku Stream | Knapsack | Metsulfuron | Alligator weed |
| 9 November – 30 November 2022 (weather permitting) | Lincoln Street Drain to Kahikatea Road Drain | Knapsack | Metsulfuron | Alligator weed |
| 9 November – 30 November 2022 (weather permitting) | Stream corner Gordonton and Puketaha Road | Knapsack | Metsulfuron | Alligator weed, Yellow flag iris |
| 9 November – 30 November 2022 (weather permitting) | Somerton Ponds and Kirikiriroa Stream | Knapsack | Metsulfuron | Alligator weed |
| 3 November – 24 November 2022 (weather permitting) | Lower Waikato - Huntly to Mercer | Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 4 November – 25 November 2022 (weather permitting) | Pond at Rotary Redwood Park Otorohanga | Knapsack | Imazapyr | Field Horsetail |
| 1 November – 21 November 2022 (weather permitting) | Te Mata Stream and Opotoru River | Knapsack, Gun and hose, Mist blower | Metsulfuron | Yellow flag iris |
| 22 October – 14 November 2022 (weather permitting) | Whangamarino River | Mist blower | Metsulfuron | Alligator weed |
| 13 October – 3 November 2022 (weather permitting) | Lower Waikato river, Ngaruawahia to Mercer, Te Onetea stream | Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 17 October – 31 October 2022 (weather permitting) | Port Waikato to Tauranganui and Tauranganui to Tuakau Bridge | Gun and hose | Metsulfuron | Alligator weed |
| 7 October – 28 October 2022 (weather permitting) | Opuatia Wetland, Churchill road, Rangiriri | Knapsack, Mist blower | Metsulfuron, Triclopyr | Willow |
| 7 October – 21 October 2022 (weather permitting) | Piako River from Awaiti Canal to the Firth of Thames | Gun and hose | Haloxyfop | Manchurian wild rice |
| 7 October – 21 October 2022 (weather permitting) | Waihou River True Left from Hikutaia Cut to Kopu | Gun and hose | Haloxyfop | Manchurian wild rice |
| 12 August – 30 August 2022 (weather permitting) | Lower Waikato River - Ngaruawahia to Tuakau | Mist blower | Metsulfuron | Alligator weed & Yellow flag iris |
| 1 September - 22 September 2022 (weather permitting) | Lower Waikato River - Ngaruawahia to Tuakau | Mist blower | Metsulfuron | Alligator weed |
| 27 June – 18 July 2022 (weather permitting) | Lower Waikato River. Ngaruawahia to Mercer | Mist blower | Metsulfuron | Alligator weed & Yellow flag iris |
| 27 June – 30 June 2022 (weather permitting) | Waihou River from the Hikutaia Cut to Kopu Bridge - True left | Gun and hose | Haloxyfop | Manchurian wild rice |
| 2 June – 23 June 2022 (weather permitting) | Te Otamanui Lagoon, Te Kowhai | Knapsack, Gun and hose and Mist blower | Metsulfuron and Triclopyr | Alligator weed |
| 8 June – 17 June 2022 (weather permitting) | Mangaonua Stream Gully | Knapsack | Metsulfuron | Alligator weed |
| 27 April – 4 June 2022 (weather permitting) | Maungatautari Road | Knapsack and Gun and hose | Haloxyfop | Manchurian wild rice |
| 4 May - 6 May 2022 (weather permitting) | Tainui Street & Rerenga Street Drain, Mokau | Knapsack | Imazapyr | Field Horsetail |
| 4 May - 6 May 2022 (weather permitting) | Redwood Park Ponds, Otorohanga | Knapsack | Imazapyr | Field Horsetail |
| 25 April – 4 May 2022 (weather permitting) | Waihou River Turua - True left side from Hikutaia Cut to Kopu Bridge | Gun and hose | Haloxyfop | Manchurian wild rice and Spartina |
| 21 April – 30 April 2022 (weather permitting) | Lower Waikato. Ngaruawahia to Huntly. Mercer to Tuakau | Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 12 April – 3 May 2022 (weather permitting) | Pond and wetland at 208 Te Puroa Road, Ngaruawahia | Knapsack, Gun and hose | Metsulfuron | Yellow flag iris |
| 4 April – 25 April 2022 (weather permitting) | River Road Landfill Ponds | Knapsack, Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 4 April – 25 April 2022 (weather permitting) | Hutchinson Road Ponds | Knapsack | Metsulfuron | Alligator weed |
| 4 April – 25 April 2022 (weather permitting) | Somerton Ponds and Kirikiriroa Stream - Thomas Road | Knapsack, Gun and hose and Mist blower | Metsulfuron | Alligator weed |
| 4 April – 25 April 2022 (weather permitting) | Stream - corner Gordonton-Puketaha Road | Knapsack and Mist blower | Metsulfuron | Alligator weed and Yellow flag iris |
| 4 April – 25 April 2022 (weather permitting) | Managakotukutukutu Stream, Peacockes | Knapsack | Metsulfuron | Alligator weed |
| 4 April – 25 April 2022 (weather permitting) | Lincoln Street Drain to Kahikatea Road Drain | Knapsack | Metsulfuron | Alligator weed |
| 30 March – 8 April 2022 (weather permitting) | Piako River Stopbanks, Hauraki District | Gun and hose | Haloxyfop | Manchurian wild rice |
| 24 March – 14 April 2022 (weather permitting) | Lower Waikato River. Tainui Bridge to Tuakau | Mist blower | Metsulfuron | Alligator weed |
| 28 March – 4 April 2022 (weather permitting | Waihou River True Right from Hikutaia Cut to the Kopu Bridge | Gun and hose | Haloxyfop | Manchurian wild rice |
| 26 March – 2 April 2022 (weather permitting) | Waikato River - Port Waikato to Tauranganui and Tauranganui to Tuakau Bridge | Gun and hose | Metsulfuron | Alligator weed |
| 1 April 2022 (weather permitting) | Stream near Wairere Drive, Logan Court, Milbrook Place | Knapsack | Metsulfuron | Alligator weed |
| 10 March – 31 March 2022 (weather permitting) | Huntly Ponds | Knapsack and Mist blower | Metsulfuron | Alligator weed |
| 10 March – 31 March 2022 (weather permitting) | Waikato River - Tainui Bridge Huntly to Taupiri and Taupiri to Ngaruawahia | Knapsack and Mist blower | Metsulfuron | Alligator weed, Yellow flag iris |
| 9 March – 30 March 2022 (weather permitting) | Te Otamanui stream - Te Kowhai south | Knapsack, Gun and hose, Mist blower | Glyphosate | Senegal tea |
| 7 March – 28 March 2022 (weather permitting) | Lower Waikato River. Huntly to Ohinewai. Tuakau to Delta | Mist blower | Metsulfuron | Alligator weed |
| 8 March – 25 March 2022 (weather permitting) | Port Waikato to Tauranganui and Tauranganui to Tuakau Bridge | Gun and hose, Mist blower | Metsulfuron | Alligator weed |
| 7 March – 16 March 2022 (weather permitting) | Ohinemuri River from the Waihi Weir to Paeroa | Knapsack | Metsulfuron | Alligator weed |
| 7 March – 12 March 2022 (weather permitting) | Pond on Gordon Avenue and Pooles Road drain, Te Aroha | Knapsack | Metsulfuron | Alligator weed |
| 22 Feb - 15 March 2022 (weather permitting) | Opuatia wetland, Whangamarino Wetland and River and Maramurua River | Helicopter | Metsulfuron | Alligator weed, Yellow flag iris |
| 22 Feb - 15 March 2022 (weather permitting) | Port Waikato to Tauranganui and Tauranganui to Tuakau Bridge | Helicopter | Metsulfuron | Alligator weed |
| 18 February – 11 March 2022 (weather permitting) | Lake Whangape and Whangape Stream | Helicopter | Metsulfuron | Alligator weed |
| 18 February – 11 March 2022 (weather permitting) | Komakorau Stream | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 18 February – 11 March 2022 (weather permitting) | Rutherford Road Drains and Matahuru Stream | Knapsack, Mist blower | Metsulfuron | Alligator weed |
| 15 Feb - 8 March 2022 (weather permitting) | Te Otamanui Lagoon - Te Kowhai North | Helicopter, Knapsack, Gun and hose | Metsulfuron, Triclopyr, Glyphosate | Alligator weed |
| 15 Feb - 8 March 2022 (weather permitting) | Lower Waikato River, Whangape Stream, Matahura Stream (Lake Waikare end) | Mist blower | Metsulfuron | Alligator weed |
| 16 Feb - 2 March 2022 (weather permitting) | Ohinemuri River from Ruahorehore Stream confluence to Paeroa township | Knapsack | Metsulfuron | Alligator weed |
| 10 Feb - 3 March 2022 (weather permitting) | Lower Waikato River, Huntly to Ohinewai | Mist blower | Metsulfuron | Alligator weed |
| 8 Feb – 1 March 2010 Feb - 3 March 2022 (weather permitting) | Mangaonua Stream | Knapsack | Metsulfuron | Alligator weed |
| 14 Feb - 21 Feb 2022 (weather permitting) | Waihou River from the Hikutaia cut to Kopu Bridge | Gun and hose | Haloxyfop | Manchurian wild rice, Spartina |
| 1 Feb – 15 Feb 2022 (weather permitting) | Ohinemuri River, Waihi to Paeroa | Knapsack | Metsulfuron | Alligator weed |
| 1 Feb - 15 Feb 2022 | Ruahorehore Stream, Waihi | Knapsack | Metsulfuron | Alligator weed |
| 27 Jan - 8 Feb 2022 | Waikato River - Ngaawapurua Rapids to Waiotapu Stream | Knapsack | Metsulfuron | Yellow Flag Iris |
| 21 Jan - 10 Feb 2022 | Mangakaware Stream | Knapsack | Metsulfuron | Alligator weed |
| 7 - 28 Jan 2022 | Port Waikato to the Tuakau Bridge | Gun and hose, knapsack and helicopter | Metsulfuron | Alligator weed |
| 3 - 24 Jan 2022 | Lower Waikato River from Huntly to Mercer (including Whangape Stream) | Mistblower spraying from boat | Metsulfuron | Alligator weed |
| 20 - 23 Dec 2021 | Motocross Track, Ngati Maru Highway, Thames | Knapsack | Metsulfuron | Alligator weed |
| 20 - 22 Dec 2021 | Wetlands on Maungatautari Road and Scott Road, Horahora | Knapsack | Haloxyfop | Manchurian wild rice |
| 20 - 22 Dec 2021 | Rimu Ridge - 3596 SH 29, Matamata | Motorised knapsack from kayak | Metsulfuron | Yellow flag iris |
| 20 - 22 Dec 2021 | Wetland at 8820 SH 26 Puriri | Knapsack | Haloxyfop | Manchurian wild rice |
| 20 - 24 Dec 2021 | Waikato River delta from Port Waikato to the Tuakau Bridge | Gun & hose spraying from airboat | Metsulfuron | Alligator weed |
| 19 - 24 Dec 2021 | Lake Rotoroa & Lake Rotokaeo | Knapsack, gun & hose | Metsulfuron | Yellow flag iris, Mexican water lily |
| 18 - 24 Dec 2021 | Waikato River - Tainui Bridge Huntly to Taupiri | Knapsack, mistblower | Metsulfuron | Alligator weed |
| 17 Dec 2021 - 28 Jan 2022 | Te Mata Stream & Opotoru River | Knapsack, gun & hose, mistblowe | Metsulfuron | Yellow flag iris |
| 17 Dec 2021 - 7 Jan 2022 | Te Onetea Stream and Lake Waikare | Knapsack, mistblower | Metsulfuron | Alligator weed, yellow flag iris |
| 17 Dec 2021 - 7 Jan 2022 | Opuatia Wetland | Knapsack, mistblower | Metsulfuron | Alligator weed, yellow flag iris |
| 15 Dec 2021 - 4 Jan 2022 | 208 Te Puroa Road, Ngaruawahia | Knapsack, gun & hose | Metsulfuron | Yellow flag iris |
|
9 - 14 Dec 2021 |
Lower Waikato River from Tainui Bridge to Mercer Bridge | Mistblower spraying from boat | Metsulfuron | Alligator weed, yellow flag iris |
|
3 - 10 Dec 2021 |
Piako River and stopbanks | Gun & hose | Haloxyfop | Manchurian wild rice |
|
1 - 9 Dec 2021 |
Pooles Road drain and ponds/wetlands on Gordon Avenue, Te Aroha | Knapsack | Metsulfuron | Alligator weed |
| 29 Nov - 17 Dec 2021 | Mangakotukutuku Stream, Peacockes | Knapsack | Metsulfuron | Alligator weed |
| 29 Nov - 17 Dec 2021 | Drain running from Lincoln Street to Kahikatea Road | Knapsack | Metsulfuron | Alligator weed |
| 29 Nov - 17 Dec 2021 | Hutchinson Road Ponds | Knapsack | Metsulfuron | Alligator weed |
| 29 Nov -20 Dec 2021 | Toreparu Stream | Knapsack | Metsulfuron | Alligtor weed, yellow flag iris |
| 29 Nov -20 Dec 2021 | Ruapuke Stream Mouth | Knapsack | Metsulfuron | Alligtor weed, yellow flag iris |
|
29 Nov - 6 Dec 2021 |
Waihou River True Right between the Hikutaia Cut and Kopu Bridge | Gun & hose | Haloxyfop | Manchurian wild rice |
| 28 Nov - 17 Dec 2021 | River Road Landfill Ponds | Knapsack, mistblower | Metsulfuron | Alligator weed |
| 24 Nov - 17 Dec 2021 | Banks of Te Mata Stream & Opotoru River | Gun & hose, mistblower, knapsack | Metsulfuron | Yellow flag iris |
|
24 Nov - 15 Dec 2021 |
208 Te Puroa Road, Ngaruawahia | Gun & hose, knapsack | Metsulfuron, Glyphosate | Alligator weed, yellow flag iris |
|
24 Nov - 15 Dec 2021 |
Waikato River and Stream at Mystery Creek | Gun & hose, knapsack | Metsulfuron, Glyphosate | Alligator weed, yellow flag iris |
|
14 Nov - 2 Dec 2021 |
Stream corner Cussen and Kereone Road, Morrinsville | Knapsack | Metsulfuron | Yellow flag iris |
|
22 - 27 Nov 2021 |
Maungahaumia Stream, Morrinsville from Matuku Road to Morrinsville-Tahuna Road | Gun & hose, knapsack | Metsulfuron | Yellow flag iris |
|
20 Nov - 11 Dec 2021 |
Waikato River from Tuakau Bridge to Mercer | Gun & hose, mistblower | Metsulfuron | Alligator weed, yellow flag iris |
|
22 Nov - 13 Dec 2021 |
Waikato River from Ngaruawahia to Tainui Bridge, Huntly | Gun & hose, mistblower | Metsulfuron | Alligator weed, yellow flag iris |
|
19 Nov - 8 Dec 2021 |
Waikato River South of Ngaawapurua Rapids to Orakei Korako and Lake Ohakuri | Knapsack | Metsulfuron | Yellow flag iris |
|
17 Nov - 8 Dec 2021 |
Whangape Stream and Lake Whangape | Mistblower spraying from boat | Metsulfuron | Alligator weed, yellow flag iris |
|
17 Nov - 8 Dec 2021 |
Whangamarino River | Mistblower spraying from boat | Metsulfuron | Alligator weed, yellow flag iris |
|
17 Nov - 8 Dec 2021 |
Lower Waikato River - Huntly to Mercer | Mistblower spraying from boat | Metsulfuron | Alligator weed, yellow flag iris |
|
16 - 30 Nov 2021 |
Matahuru Stream | Knapsack, mistblower | Metsulfuron | Alligator weed |
|
16 - 30 Nov 2021 |
Rutherfurd Road Drains, Mangawara | Knapsack, mistblower | Metsulfuron | Alligator weed |
|
14 - 19 Nov 2021 |
Somerton Ponds and Kirikiriroa Stream | Knapsack, mistblower | Metsulfuron | Alligator weed, yellow flag iris |
|
14 - 19 Nov 2021 |
Stream corner of Gordonton and Puketaha Road | Knapsack, mistblower | Metsulfuron | Alligator weed, yellow flag iris |
|
4 - 25 Nov 2021 |
Pond at Te Pahu Road | Knapsack | Metsulfuron | Yellow flag iris |
|
4 - 25 Nov 2021 |
Pond at Owen Road, Pirongia | Knapsack | Metsulfuron | Yellow flag iris |
|
1 - 22 Nov 2021 |
Pond at Raynes Road, Rukuhia | Knapsack, mistblower | Metsulfuron, Glyphosate | Yellow flag iris |
|
1 - 22 Nov 2021 |
Pond and Stream at Pirongia Road | Knapsack, mistblower | Metsulfuron, Glyphosate | Yellow flag iris |
|
1 - 22 Nov 2021 |
Pukerimu Lane Ponds | Knapsack, mistblower | Metsulfuron, Glyphosate | Yellow flag iris |
|
22 Oct - 12 Nov 2021 |
Waikato River - Ngaruawahia to Mercer | Mistblower spraying from boat | Metsulfuron | Alligator weed |
|
22 Oct - 12 Nov 2021 |
Waipa River - Ngaruawahia to Bedford Road | Mistblower spraying from boat | Metsulfuron | Alligator weed |
|
21 Oct - 4 Nov 2021 |
Komakorau Stream | Knapsack, mistblower | Metsulfuron | Alligator weed |
|
1 - 8 Nov 2021 (CANCELLED) |
Waihou River True Right Turua, from the Hikutaia Cut to Kopu | Gun and hose spraying from airboat | Haloxyfop | Manchurian wild rice, spartina |
| 21 - 28 Oct 2021 | Acacia Crescent, Glenview | Knapsack | Metsulfuron | Yellow flag iris |
| 20 - 27 Oct 2021 | Lake Rotoroa & Lake Rotokaeo | Knapsack, gun & hose | Metsulfuron | Yellow flag iris |
| 29 Sept - 20 Oct 2021 | Tuhikaramea Stream & Paratawa Stream, Old Mountain Road | Knapsack, gun & hose, mistblower | Metsulfuron | Yellow flag iris |
| 4 - 11 October 2021 | Waihou River - True Left - from the Hikutaia Cut to the Kopu Bridge | Gun & hose spraying from airboat | Haloxyfop | Manchurian wild rice |
| 23 Sept - 14 Oct 2021 | Waikato River - Ngaruawahia to Mercer Bridge | Mistblower spraying from boat | Metsulfuron | Alligator weed, yellow flag |
| 23 Sept - 14 Oct 2021 | Waipa River - Te Kowhai to Ngaruawahia | Mistblower spraying from boat | Metsulfuron | Alligator weed, yellow flag iris |
| 24 June - 1 July 2021 | Wetland on private property on SH26 Puriri | Knapsack and gun and hose | Haloxyfop | Manchurian wild rice |
| 27 - 30 June 2021 | Port Waikato to Tauranganui and Tauranganui to Tuakau Bridge | Gun and hose | Metsulfuron | Alligator weed |
| 10 - 30 June 2021 | Ruapuke Stream Mouth & Toreparu Stream | Knapsack | Metsulfuron | Alligator weed, yellow flag iris |
| 9 - 30 June 2021 | Lower Waikato River from Ngaruawahia to Port Waikato | Mistblower spraying from boat | Metsulfuron | Alligator weed, yellow flag iris |
| 4 - 25 June 2021 | Mangakaware Stream, Te Rore | Knapsack and gun and hose | Metsulfuron | Alligator weed |
| 4 - 25 June 2021 | Cambridge Golf Course, Pond at Te Mawhai, Pond at Clark Lane, Te Otamanui/Te Kowhai South | Knapsack and gun and hose | Metsulfuron | Senegal tea, Water poppy, Sagittaria |
| 3 - 4 June 2021 | Golden Cross Road Waihi | Knapsack and gun and hose | Metsulfuron | Wild Ginger |
| 5 - 26 May 2021 | Stream gully at Hill Road, Maungatautari | Helicopter | Metsulfuron | Climbing spindleberry |
| 1 - 21 May 2021 | Te Otamanui Lagoon, Te Kowhai | Helicopter | Triclopyr | Alligator weed |
| 19 - 30 April 2021 | Komakorau Stream | Mist blower, knapsack | Metsulfuron | Alligator weed |
| 15 - 30 April 2021 | Stream corner Gordonton - Puketaha Road | Knapsack, mistblower | Metsulfuron | Alligator weed |
| 15 - 30 April 2021 | Somerton Ponds and Kirikiriroa Stream - Thomas Road | Knapsack, gun & hose, mistblower | Metsulfuron | Alligator weed |
| 12 - 30 April 2021 | Waikato River Delta | Helicopter | Metsulfuron | Alligator weed |
| 12 - 30 April 2021 | Whangape Stream and Lake Whangape | Helicopter | Metsulfuron | Alligator weed |
| 12 - 30 April 2021 | Whangamarino Wetland and Maramarua River | Helicopter | Metsulfuron | Alligator weed |
| 12 - 30 April 2021 | Opuatia Wetland | Helicopter | Metsulfuron | Alligator weed |
| 9 - 30 April 2021 | Lower Waikato River from Rangiriri to Port Waikato | Mistblower spraying from boat | Metsulfuron | Alligator weed |
| 9 - 30 April 2021 | Waipa River from Te Kowhai to Ngaruawahia | Mistblower spraying from boat | Metsulfuron | Alligator weed |
| 26 March 2021 | River Road landfill ponds, Hamilton | Knapsack | Metsulfuron | Alligator weed |
| 26 March 2021 | Drain running from Lincoln Street to Kahikatea Park, Hamilton | Knapsack | Metsulfuron | Alligator weed |
| 25 March - 9 April 2021 | Awaroa River, Waiuku | Mistblower, knapsack | Metsulfuron | Senegal tea |
| 25 March to 22 April 2021 | Waikato River - Ngaawapurua Rapids to Waiotapu Stream | Knapsack | Metsulfuron | Yellow flag iris |
| 23 March - 12 April 2021 | TM Station Drains | Knapsack | Metsulfuron | Alligator weed, yellow flag iris |
| 23 March - 12 April 2021 | Near Matauwai Stream, Taharoa | Knapsack | Metsulfuron | Alligator weed, yellow flag iris |
| 23 March - 12 April 2021 | Coastal wetland near Wainui Stream, Taharoa | Knapsack | Metsulfuron | Alligator weed, yellow flag iris |
| 23 March - 12 April 2021 | Turiakina Stream Mouth - Marokopa | Knapsack | Metsulfuron | Alligator weed, yellow flag iris |
| 23 March - 12 April 2021 | Tauhua Stream | Knapsack | Metsulfuron | Alligator weed, yellow flag iris |
| 18 - 31 March 2021 | Waikato River Delta | Gun & hose spraying from airboat | Metsulfuron | Alligator weed |
| 18 - 29 March 2021 | Mangaonua Stream Gully | Knapsack, gun & hose, mistblower | Metsulfuron | Alligator weed |
| 17 March to 7 April 2021 | Te Otamanui Lagoon | Knapsack, gun and hose | Metsulfuron | Alligator weed |
| 17 March - 7 April 2021 | Pond at Cambridge Golf Course | Knapsack | Metsulfuron | Water poppy |
| 13 March - 10 April 2021 | Ohinemuri River from Waihou River to Paeroa | Mistblower spraying from boat | Metsulfuron | Sagittaria, alligator weed |
| 13 March - 10 April 2021 | Waihou River from Cadman Road to river mouth | Mistblower spraying from boat | Metsulfuron | Sagittaria, alligator weed |
| 15 March - 5 April 2021 | Lower Waikato River from Huntly to Port Waikato & Whangamarino River | Mistblower spraying from boat | Metsulfuron | Alligator weed, yellow flag iris |
| 11 - 31 March 2021 | Lake Whangape | Helicopter | Metsulfuron | Alligator weed |
| 11 - 31 March 2021 | Whangamarino Wetland | Helicopter | Metsulfuron | Alligator weed |
| 25 Feb - 17 March 2021 | Mangaonua Stream | Knapsack, gun & hose, mistblower | Metsulfuron | Alligator weed |
| 23 Feb - 14 March 2021 | Lower Waikato River from Horotiu Bridge to Port Waikato | Mist blower spraying from boat | Metsulfuron | Alligator weed |
| 22 Feb - 15 March 2021 | Ruapuke Stream Mouth & Waimaori Road - Toreparu Stream | Knapsack | Metsulfuron | Alligator weed, yellow flag iris |
| 15 Feb - 5 March 2021 | Pond at Te Mawhai Road | Knapsack, gun & hose, mistblower | Metsulfuron | Water poppy |
| 15 Feb - 5 March 2021 | Pond at Cambridge Golf Course | Knapsack, gun & hose, mistblower | Metsulfuron | Water poppy |
| 15 Feb - 5 March 2021 | Te Otamanui Lagoon, Te Kowhai | Knapsack, gun & hose, mistblower | Metsulfuron | Alligator weed, Senegal tea |
| 15 Feb - 5 March 2021 | Kirikiriroa Stream & Somerton Pond, Mangaiti Gully | Knapsack, gun & hose, mistblower | Metsulfuron | Alligator weed |
| 24 Feb - 3 March 2021 | Waihou River, Turua | Gun and hose | Haloxyfop | Manchurian wild rice, Spartina |
| 24 Feb - 3 March 2021 | Huntly Ash Ponds | Knapsack, mistblower | Metsulfuron | Yellow flag iris |
| 24 Feb 2021 | River Road Landfill Ponds | Knapsack | Metsulfuron | Alligator weed |
| 24 Feb 2021 | Acacia Crescent, Glenview, Hamilton | Knapsack | Metsulfuron | Yellow flag iris |
| 3 - 24 Feb 2021 | Lower Waikato River from Tainui Bridge to Port Waikato | Mistblower, knapsack | Metsulfuron | Alligator weed, yellow flag iris |
| 9 - 13 Feb 2021 | Waihou River | Gun and hose from airboat | Haloxyfop | Manchurian wild rice |
| 2 - 16 Feb 2021 | Waikato River Delta | Helicopter & gun and hose from boat | Metsulfuron | Alligator weed |
| 28 Jan - 4 Feb 2021 | Pooles Road Drain and pond on Gordon Ave, Te Aroha | Knapsack | Metsulfron | Alligator weed |
| 21 Jan - 11 Feb 2021 | Te Otamanui Lagoon - Te Kowhai South | Mistblower, gun & hose, knapsack | Metsulfron, Glyphosate | Senegal tea |
| 21 Jan - 11 Feb 2021 | Pond at Clark Lane, Karamu | Mistblower, gun & hose, knapsack | Metsulfron, Glyphosate | Sagittaria |
| 21 Jan - 11 Feb 2021 | Pond at Cambridge Golf Course | Mistblower, gun & hose, knapsack | Metsulfron, Glyphosate | Water poppy |
| 21 Jan - 11 Feb 2021 | Pond at Te Mawhai Road | Mistblower, gun & hose, knapsack | Metsulfron, Glyphosate | Water poppy |
| 18 Jan - 8 Feb 2021 | Near Matauwai Stream, Taharoa | Knapsack | Metsulfron, Glyphosate | Alligator weed |
| 18 Jan - 8 Feb 2021 | Coastal wetland near Wainui Stream, Taharoa | Knapsack | Metsulfron, Glyphosate | Alligator weed |
| 18 Jan - 8 Feb 2021 | TM Station Drains | Knapsack | Metsulfron, Glyphosate | Alligator weed |
| 18 Jan - 8 Feb 2021 | Tauhua Stream | Knapsack | Metsulfron, Glyphosate | Yellow flag iris |
| 18 Jan - 8 Feb 2021 | Turiakina Stream Mouth - Marokopa | Knapsack | Metsulfron, Glyphosate | Alligator weed |
| 18 Jan - 8 Feb 2021 | Waimaori Road - Toreparu Stream | Knapsack | Metsulfron, Glyphosate | Alligator weed |
| 18 Jan - 8 Feb 2021 | Ruapuke Stream | Knapsack | Metsulfron, Glyphosate | Alligator weed |
| 18 Jan - 8 Feb 2021 | Te Otamanui Lagoon - Te Kowhai North | Mistblower, knapsack | Metsulfuron | Alligator weed |
| 14 Jan - 04 Feb 2021 | Mangakaware Stream & wetland - Te Rore | Helicopter, Knapsack, Gun and hose | Metsulfuron, Glyphosate | Alligator weed |
| 14 Jan - 04 Feb 2021 | Te Otamanui Lagoon - Te Kowhai North | Helicopter, UAV - Yamaha Rmax | Metsulfuron, Triclopyr, Glyphosate | Alligator weed |
| 12 Jan - 02 Feb 2021 | Lower Waikato River - Horotiu Bridge to Mercer Bridge | Mist blower | Metsulfuron, Pulse | Alligator weed |
| 15 - 30 Jan 2021 | Horahora wetlands | Gun and hose | Haloxyfop | Manchurian wild rice |
| 13 - 27 Jan 2021 | Huntly Ash Ponds | Helicopter | Metsulfuron | Yellow flag iris |
| 13 - 27 Jan 2021 | Waikato River from Ohinewai to Whangape Stream | Helicopter | Metsulfuron | Yellow flag iris, alligator weed |
| 12 - 26 Jan 2021 | Whangamarino Wetland and River and Maramarua River | Helicopter | Metsulfuron, Pulse | Alligator weed |
| 22 Jan 2021 | Port Waikato Delta to Tuakau boat ramp | Helicopter | Metsulfuron, Pulse | Alligator weed |
| 05 - 22 Jan 2021 | Port Waikato to Tuakau Boat Ramp | Gun and hose | Metsulfuron, Pulse | Alligator weed |
| 12 - 15 Jan 2021 | Wetlands Horahora are | Gun and hose | Haloxyfop | Manchurian wild rice |
| 12 - 15 Jan 2021 | Somerton Pond | Knapsack | Metsulfuron, Pulse | Alligator weed |
| 12 - 15 Jan 2021 | Stream near Wairere Drive, Logan Court, Milbrook Plac | Knapsack | Metsulfuron, Pulse | Alligator weed |
| 09 - 15 Jan 2021 | Waihou River Turua area | Gun and hose | Haloxyfop | Manchurian wild rice |
| 11 Jan 2021 | Acacia Crescent, Glenview | Knapsack | Metsulfuron, Pulse | Yellow flag iris |
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