Deadly Nightshade or Bittersweet Nightshade Solanum dulcamara

Deadly Nightshade, while not actually seriously deadly, can cause poisoning, though not usually fatal, if eaten in large quantities. This plant is an import from England, but it is now widespread and common on the American landscape. The vine itself is attractive, the distinctive purple and yellow flowers can be spectacularly lovely in quantity, and the green berries which turn bright red later in the summer are extremely eye-catching. Because it has both berries and flowers almost all summer long, this plant is easy for almost anyone to recognize.