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California Blackberry
California Blackberry botanical plate
Field guide plate · click to zoom

California Blackberry

Rubus ursinus
In the United States: Native · also called trailing blackberry, Pacific blackberry, California dewberry

Honeybees visit California blackberry flowers for their abundant nectar and pollen, providing a significant forage source during the late spring to midsummer bloom period. The trailing, thorny vines form low-growing thickets that can spread aggressively and may require regular pruning to control growth and ensure bee access. As a dioecious species, both male and female plants produce attractive white flowers that draw pollinators.

Nectarhigh
Pollenhigh
Bloom (US) March–July
TypePerennial
Sunpartial
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