It seemed like such a pretty little thing...
I have been watching this one plant grow in one of my pots on the porch, admiring it's pretty yellow flower... until now. Looking closely, it has spines along the stem and produces a mean-looking burr. Turns out it is a thing called buffalo burr, among other names and is an opportunistic and highly prolific member of the nightshade family. In several states it is listed as a noxious, invasive weed. It is, however, no match for a gardener with tough gloves and access to a food-disposal. Sign in to see full entry.