Californian thistle is one of the most common thistle species in New Zealand. It is very troublesome in pastures because it is so difficult to control. Once a plant is established in pasture, it forms ...

Nodding thistle is often listed as a Pest Plant by Regional Councils in areas where nodding thistle is still only ... though the latter tend to grow in clusters due to being connected underground by ...

Despite its name, Canada thistle is not a plant native to Canada ... The resulting spread is perhaps why it is also known as creeping thistle. This can be particularly concerning if you have ...