Black-eyed Susan, also called yellow daisy, is a small wildflower with orange-yellow rays and purple-black, cone-shaped centers. These flowers grow in dry fields and along roads from northern Mexico to southern Canada. One flower grows on each stem, and a plant may have many stems. The leaves are stiff and hairy, arranged alternately on the stem. These showy flowers bloom from May to October. They are hard to pick without pulling up the entire plant because the stems are tough, and may become a weed.