California blackberry is native to western North America. This is a wide, spreading shrub or vine-bearing bush with prickly branches that can tip layer to spread vegetatively. Its white flowers may be distinguished from those of other blackberries by their narrow petals.
Fun Fact The sweet, very aromatic, edible fruits are dark purple to black and up to 2 centimeters in length. They need consistent amounts of moisture to set large fruit. In coastal areas of Washington state they are called "little wild blackberries".