Scotch thistle (Onopordum acanthium) is a biennial native to Eurasia. It was introduced into the U.S. as an ornamental and as ...

Landowners in southern Rio Arriba, Santa Fe and Los Alamos counties may be eligible for financial assistance to deal with invasive or noxious weeds including Scotch thistle, chicory and Russian olive.

Scotch thistle is a biennial weed, so it depends quite heavily on the establishment of seed on a regular basis if it is to be found commonly in any particular situation. In contrast, many pasture ...

Goats will eat the weed once it is growing taller than the surrounding vegetation. AgPest have more on the biology and control of nodding thistle. Scotch thistle is the most common thistle species in ...