The official State Fruit of Alabama is the blackberry (Rubus, R. occidentalis) The blackberry was designated the state fruit of Alabama on April 30, 2004 via state legislature Senate Bill 163. Blackberries are a aggregate fruit that is composed of many smaller fruits called drupes and are often confused with rasberries. One way to tell the difference between the two is rasberries are hollow inside and blackberries are not. Blackberries are also very good for you and are antioxidants that contain vast amounts of anthocyanocides which have been reported to helpding prevent heart disease, cancer and strokes.