Identify four invasive weeds and learn how to remove them ... semi-woody stem. The flowers appear in late summer as small, ...

Flowers are unisexual, on separate plants; flowers purple (occasionally white) in heads 1/2 to 3/4 inch in diameter ... but still maintain itself. This aggressive weed is difficult to control; for ...

Washington state officials are debating whether to brand a traditional holiday decoration a noxious weed. The dubious decor ...