Add Yahoo as a preferred source to see more of our stories on Google. Each Canada thistle plant can produce 1,500 seeds in a single season. Q: We recently moved to a new home and have inherited flower ...

This has been a phenomenal year for germination of noxious weeds. Scotch thistle, for instance. Scotch thistle grows up to 13 feet tall. Cutting the root 2 inches below ground will kill that root and ...

Thistle can spread quickly and will compete with other plants for water and nutrients. To get rid of thistle, simply pull it out of the soil by hand. Mulch can help prevent thistle from coming back.