The small perennial shrub Solanum umbelliferum is known commonly as the blue witch nightshade, sometimes spelled bluewitch. It is one of many species of nightshade in genus Solanum, which also includes domesticated plants such as tomato, potato, and eggplant. Blue witch has dark gray-green oval-shaped leaves on hairy green stems that grow to a maximum height of one meter. It has bright purple or blue frilly flowers with thick yellow carpels at the center. The flowers...