Hairy Ceanothus
Ceanothus oliganthus
Last reviewed: June 2026
Hairy Ceanothus (Ceanothus oliganthus) 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
full sun
Water
low
Size
24"–120" H × 24"–96" W
Bloom
Mar, Apr, May
Native to
CA
Pollinators
bees, butterflies
Browse plants for this ecoregion
Hairy ceanothus is a native evergreen shrub with small blue to purple flower clusters that bloom in spring. It features dense foliage with leathery, dark green leaves and can grow 2-10 feet tall, creating an attractive year-round presence in the landscape.
In an HOA neighborhood
Hairy Ceanothus is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.
Works well in: foundation, mid zone, backyard only.
- Can look somewhat wild/informal if not occasionally pruned
- Size must be managed in smaller spaces
- May appear less manicured than non-native ornamentals
Wildlife value
Host plant for Chalcedon checkerspot butterfly, California hairstreak.
This shrub provides excellent habitat and food resources for native bees and butterflies. The spring blooms are particularly valuable for early-season pollinators.
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 Hairy Ceanothus fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.