Rubus ursinus, also known as Trailing Blackberry, California Blackberry, & Pacific Blackberry, is a deciduous 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 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!