Thistles weeds can be particularly difficult to remove, thanks to their fine spikes that will lodge themselves in your skin, ...

Canada thistle, a terrestrial herbaceous perennial in the Asteraceae family, is an open-land invasive that prefers disturbed upland areas as well as wet areas with water fluctuations. Canada thistle ...

Canada thistle (Cirsium arvense) is an aggressive, invasive plant. Here's how it spreads and how to identify it so it doesn't take over your garden.