Rubus ursinus, Pacific blackberry,
is a native blackberry that ranges from Baja to British Columbia
and into Idaho. In southern California this blackberry doesn't always set fruit. It appears like it does only when conditions are right. When? Probably in cool, moist, years. The plants harbor
beneficial insects and commonly grow with Artemisia douglasiana, Salix species, Cornus species, cottonwoods, Hedge nettle, and other riparian species.
This blackberry is a larval food source for Western Tiger Swallowtail Butterfly, Papilio rutulus, Mourning Cloak Butterfly, Nymphalis antiopa, Gray hairstreak, Strymon melinus, and Spring Azure Butterfly, Celastrina ladon.
Grows in the filtered shade to full shade of a creek bank. In coastal areas it will grow from full shade to full sun, in the interior it will hide more in the shade.
Easy to grow as long as you have water and space, (give
plenty of water in the desert). Berries are good. This is the
parent of Loganberry, Youngberry, and Boysenberry.
Most effective in stabilizing a creek bank or the edges of a bioswale or banks of a flood basin.
Rubus ursinus tolerates clay and seasonal flooding.
Foliage of Rubus ursinus has color green and is deciduous.
Flower of Rubus ursinus has color white and has a fragrance.
Fruit of Rubus ursinus is edible.
Communities for Rubus ursinus:Chaparral, Closed-cone Pine Forest, Coastal Sage Scrub, Freshwater Marsh, Mixed-evergreen Forest, Northern Coastal Sage Scrub, Northern Oak Woodland, Redwood Forest, Riparian (rivers & creeks) and Central Oak Woodland.