Introducing the Rubus Ursinus California Blackberry, Pacific Blackberry, Trailing Blackberry! This deciduous shrub is a spreader, with prickly branches, and produces sweet, edible fruits that are dark purple to black and up to 2 centimeters in length. It is native to western North America and prefers moist soil and semi-shade or no shade. This blackberry or dewberry shrub is known as the California blackberry and Pacific blackberry and is an ancestor to the loganberry and Boysenberry. In coastal Washington, they are called "little wild blackberries" and are a favored fruit for commercial pies at restaurants and bakeries. Try freezing the fruit on cookie sheets for a sweet treat year-round!