Blue Oak

Quercus douglasii Hook. & Arn.

Beech family

Plant Type

Tree

Life Cycle

Perennial

Mature Height

50.0 feet

Flower Color

Yellow

Bloom Time

Early Spring, Mid Spring

Growing Conditions

Light

Shade Tolerance Intolerant

Water

Water Use Low

Soil

CaCO3 Tolerance None

Ecosystem & Wildlife

Pollinators Larval Host (Butterfly); Larval Host (Moth); Wind

Larval Host Acrobasis comptella, Anisota stigma, Archips argyrospila, Aristotelia urbaurea, Cameraria lobatiella, Cameraria pentekes, Cameraria serpentinensis, Cameraria temblorensis, Chionodes formosella, Chionodes occidentella, Chionodes raspyon, Chionodes trichostola, Coleophora querciella, Decodes fragariana, Dyseriocrania auricyanea, Epinotia emarginana, Erynnis tristis, Erynnis tristis tristis, Evippe laudatella, Feralia februalis, Malacosoma constricta constricta, Phryganidia californica, Rhodophaea fria, Satyrium auretorum, Telphusa sedulitella, Xenolechia querciphaga

Native Range

USA: California

Regional Native Status: L48 (N)

State-level native status is based on data available through Plants of the World Online. Regional Native Status comes from the USDA Plants Database. For more detailed native status information, please refer to BONAP.