State Prohibited Weeds are invasive plants that either:

• do not occur in Victoria but pose a significant threat if they invade
• are present, pose a serious threat and can reasonably be expected to be eradicated

If present, infestations of a state prohibited weed are relatively small.

They are to be eradicated from Victoria if possible or excluded from the state. The Victorian Government is responsible for their eradication, but under section 70(1) of the Catchment and Land Protection Act 1994 (CaLP Act), it can direct landowners to prevent their growth and spread.

Regionally Prohibited Weeds are not widely distributed in a region but are capable of spreading further. Whitehorse falls within the Port Phillip and Westernport Region.

It is reasonable to expect that they can be eradicated from a region and they must be managed with that goal.

Land owners, including public authorities responsible for crown land management, must take all reasonable steps to eradicate regionally prohibited weeds on their land.

Regionally Controlled Weeds are usually widespread in a region. Whitehorse falls within the Port Phillip and Westernport Region.

To prevent their spread, ongoing control measures are required.

Land owners have the responsibility to take all reasonable steps to prevent the growth and spread of regionally controlled weeds on their land.

Restricted Weeds includes plants that pose an unacceptable risk of spreading in this state and are a serious threat to another state or territory of Australia. Trade in these weeds and their propagules (either as plants, seeds or contaminants in other materials) is prohibited.