In the late summer through early fall there is no better fruit treat than the plum berry. The fruits are delicious when fully ripe as the sugar build inside the berry during the cool nights of autumn. The six foot tall plant will yield 20 pounds or more berries full of Vitamin A, about 1,000 I.U. per 8 ounce cup. The plants are also great in landscapes. White flowers cover each branch every spring and the green summer foliage changes to the colors of yellows, red, and oranges creating a brilliant autumn display. This native, Prunus maratima, or Plum Berry, is native in the U.S. and will grow in most soil types. Hardiness Zones 3-8.