Easily recognizable due to its vase-shaped purple flowers with dandelion-like seeds, Canada thistle (Cirsium arvense) is a particularly aggressive invasive plant. Despite its name, Canada thistle ...

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 ...

When it comes to thistle weeds ... Creeping thistles (Cirsium arvense) otherwise known as Canada thistles or California thistles are fast-growing and spreading perennials that can grow to a ...