Native thistles are integral to the local ecosystem; some, like the Sacramento Mountain thistle (Cirsium vinaceum), for ... least harmful way to kill these weeds in your lawn and garden is to ...

A perennial weed with round, scalloped leaves and small purple flowers. It's known for its aggressive growth in lawns and ...

In contrast, many pasture weeds are perennials which means that once they have germinated they remain alive for many years afterwards due to vegetative reproduction. However, Scotch thistle, and other ...