Pesticide Notifications

Aquatic Weed Spraying – Lake Woodcroft, Blacktown

Product: Glyphosate 360g/L (Roundup Biactive) Purpose of use: high volume spraying of Salvinia (Salvinia molesta) infestation around the lake edge and from the water. The program will operate between 01/05/2022 to 20/12/2022. The place of use: Lake Woodcroft APVMA minor use permit (PER14327) There is no withholding period associated with this herbicide application. Hawkesbury River County Council will also install aquatic weed booms on Lake Woodcroft to assist in the control of Salvinia. Application will be done by trained and licensed operators following best practice.

For more information on Salvinia visit this site.

Or contact  Hawkesbury River County Council

Phone(02) 4574 9600

or send an email to:

HRCC Aquatic Weed Control Program 2023

Hawkesbury River County Council will be conducting aquatic weed surveillance and spraying operations along the Hawkesbury/Nepean River from Wallacia – downstream to Wisemans ferry to locate and control weed species.

Surveillance will also be undertaken by our Inspectors to map weeds along the river system.

Weed control may include foliar spraying of registered herbicides, approved for use in aquatic situations by registration or by the APVMA under permit. Weeds targeted may include Alligator weed, Ludwigia peruviana, Water hyacinth and Salvinia.

The control program will be inclusive from February 2023 through to June 2023 depending on weather conditions.

For further information call (02) 4574 9600 during office hours of 9am-3pm or email Natalie James  Weeds Control Coordinator at  or Phil Price Biosecurity Weeds Coordinator at

HRCC priority weed control program 2022

Council will be conducting widespread spot control of priority weeds along roads, road reserves, and in council parks and reserves of our member councils from throughout 2022.

Weeds treated during  will be;

  • Boneseed
  • Mother of millions
  • African boxthorn
  • Broad leaf pepper
  • Green cestrum
  • Ming fern
  • Coolatai grass
  • Kei apple

Control of these weeds will take place via manual removal, low volume spot spraying, basal bark and cut stump control techniques.

Weed control operations will be conducted using registered herbicides and used in accordance to herbicide label directions and pose minimal risk to human, animal or environmental health when used in the manner prescribed.

Areas to be treated; Council managed roads, road reserves, parks and reserves in the local government areas of Blacktown, Hawkesbury, The Hills shire and Penrith.

IMPORTANT –  If using any herbicides around your home or property, always read the label before using any herbicide.  All chemicals MUST be used strictly in accordance with the registered label for the product.

For further information on this control program, or for general information regarding noxious weed species, please contact council on 4574 9600 or email

Pesticide Use Notification Plan

This plan describes how chemicals are used safely in the environment. It provides information on the public places and types of chemicals used and how the community is notified about their use. It also includes a form to register as a “chemical sensitive” individual or place.