Every year I add some castor bean plants to my yard. These plants add a bit of the tropics to sunny areas of my garden. The leaves are large and the plants can grow up to 15 feet tall in a single season if you start them early inside. Ricinus communis is the latin name for this plant and is actually native to the Ethiopian region of tropical East Africa. The flowers are really interesting and the plant looks great in containers on a sunny pati...