Nodding thistle is often listed as a Pest Plant by Regional Councils in areas where nodding thistle is still only just establishing, making it a legal requirement to control it. Nodding thistle can be ...

European marsh thistle, a terrestrial and wetland herbaceous biennial in the Asteraceae family, is an invasive plant that prefers moist soils. European marsh thistle frequently invades fens, wetlands, ...

Canada thistle, a terrestrial herbaceous perennial in the Asteraceae family, is an open-land invasive that prefers disturbed upland ... annually hand pull or dig rosettes and adult plants, dry in the ...