California Buckthorn
Rhamnus californica
Last reviewed: June 2026
California Buckthorn (Rhamnus californica) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org, last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part sun
Water
low
Size
48"–180" H × 48"–120" W
Bloom
Apr, May, Jun
Native to
AZ, CA
Pollinators
bees, butterflies
Browse plants for this ecoregion
Buckthorn is an attractive evergreen shrub with glossy oval leaves and small white flowers in spring. It produces red berries that mature to black in fall, creating year-round visual interest. This drought-tolerant native adapts well to various garden settings.
In an HOA neighborhood
California Buckthorn is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone, backyard only.
- Can get leggy without occasional pruning
Wildlife value
Host plant for pale swallowtail butterfly, echo blue butterfly.
This shrub supports local ecosystems by attracting bees and butterflies during its spring bloom period. The berries provide important food for birds and other wildlife in fall and winter.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does California Buckthorn fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.