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 ravens, Canadian thistle) is a perennial, while bull thistle (Cirsium vulgare, Spear thistle) is a biennial. Both appear on the Pennsylvania’s list of noxious weeds.

The rosettes of Canada thistle can be intriguing to the uninitiated, but left undisturbed, they will soon take over a garden.

Many livestock animals will graze on the thistle, especially when the plant is in the full-bloom stage. Its rosettes can grow to a diameter of 24 inches and can choke out the beneficial plants.

Canada thistle (Cirsium arvense) is probably near the top of the list for just about any gardener and farmers too for that matter. It is a tough perennial broadleaf weed ...

The musk thistle head weevil, Rhinocyllus conicus, and the rosette weevil, Trichosirocalus horridus, have been released in Oklahoma to help reduce seed production. Now is the time for weevil releases.

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, ...

Thistle has become nearly synonymous with noxious weeds, though, of the roughly 70 listed species, only five are thistles. Musk, Canada, bull, scotch and plumeless thistle are all noxious weeds in ...

Share this article LONDON, May 20, 2011 /PRNewswire/ -- Thistle Hotels has announced that just two months from its opening, the Crown Social restaurant at The Parc by Thistle in Cardiff has been ...