Rules & Permits
Declared noxious weeds: what you're legally required to do
Victorian law says you must eradicate some weeds and stop others spreading. How the categories work, and what a notice actually means.
Most land owners find out about weed law when a letter lands on the kitchen table. The duty exists well before that letter, and it applies whether or not anyone has told you about it.
The duty, in plain terms
Section 20 of the Catchment and Land Protection Act 1994 says a land owner must take all reasonable steps to eradicate regionally prohibited weeds on their land, and prevent the growth and spread of regionally controlled weeds — the exact wording is in section 20 of the Catchment and Land Protection Act. That's an ongoing obligation attached to owning the land, not something that starts when a council or an authorised officer contacts you.
Four categories — and yours may not match your neighbour's
Plants declared as noxious weeds in Victoria sit in one of four categories: state prohibited, regionally prohibited, regionally controlled, and restricted, as classified by Agriculture Victoria. Classification is set for each catchment region, so the same plant can be in a different category a couple of hours' drive away, and the duty on you changes with it. Check what the plant is and how it's classified for your region before you plan anything.
What happens if you don't act
The usual enforcement path is a Directions Notice or a Land Management Notice, which sets out what must be done about the weeds on your land. Failing to comply with the conditions of that notice is an offence under the Act — Agriculture Victoria's guidance on managing noxious weeds sets out how it's enforced. If a notice arrives, treat the date on it as real and get the work scoped straight away.
Mulching is one of the accepted control measures
The prescribed measures for controlling noxious weeds are application of a registered herbicide, cultivation, physical removal, and mulching, as prescribed under the Act. So clearing and mulching can be part of meeting your obligation. Keep the evidence: dated photos of the area before and after, and the invoice naming the area treated. If a notice is on the table, give the contractor the notice itself rather than a description of it.
Cutting is not the same as controlling
A lot of declared weeds reshoot from remaining root and hold a seed bank in the soil, so one pass with a machine leaves the plant coming back — often thicker. Plan follow-up works rather than a single clear. And don't move noxious weed material off the property or sell it: the Act prohibits the movement and sale of noxious weeds of all categories anywhere in the state under the invasive species laws. Clean down machinery before it leaves a infested site too.
A weed notice and a fire notice are different letters
A fire prevention notice comes from your council's fire prevention officer under the Country Fire Authority Act and is about fire risk. A weed notice comes from an authorised officer under the CaLP Act and is about a specific plant. Clearing grass to a fire standard doesn't necessarily do anything about a standing weed direction, and vice versa. Read which letter you've actually got.
If you've got gorse or blackberry
Both are common across Central Victoria and both take more than one visit to get on top of. Start with what the plant is, how big the patch is, and whether seed is already in the ground — that's what decides whether you need a clearing run, a mulching pass, or a program.
Classifications and enforcement practice change. Confirm your species, its category in your region, and your current obligations with Agriculture Victoria before you rely on this.
Ironbark's mechanical clearing and mulching are available now. Commercial weed spraying needs a Commercial Operator Licence (COL) from Agriculture Victoria, which Ironbark is arranging; until it's in hand, arrange herbicide treatment separately with a suitable weed-control contractor or adviser, following the product directions and any waterway restrictions.
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