Quercus douglasii Blue oak (Fagaceae) Deciduous tree

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Quercus douglasii
Blue oak
Deciduous tree
(1 Page of 5)

The Quercus douglasii plant species is found in Southwestern N. America - California. It is a member of the Fagaceae family. Common gardeners may know the plant as Blue oak.

Cultivation | Propagation | General Uses
Medicinal | Edible Uses

Latin Name:  Quercus douglasii
Common Name:  Blue oak
Family:  Fagaceae
Author:  Hook.&Arn.

Known Hazards:  None known

Mature Height:  12   Mature Width:

Habitat:  Dry soils in valleys, rolling hills and lower mountain slopes to 1350 metres[62, 82], often forming extensive stands[229].

Cultivation Notes: Prefers a good deep fertile loam which can be on the stiff side[1, 11]. Young plants tolerate reasonable levels of side shade[200]. Tolerates moderate exposure, surviving well but being somewhat stunted[200]. Prefers warmer summers than are usually experienced in Britain, trees often grow poorly in this country and fail to properly ripen their wood resulting in frost damage overwinter[200]. A slow-growing but long-lived tree. Seed production is cyclic, a year of high yields being followed by 2 - 4 years of low production[229]. The tree flowers on new growth produced in spring, the seed ripening in its first year[200, 229]. This species is notably resistant to honey fungus[88, 200]. Hybridizes freely with other members of the genus[200]. Intolerant of root disturbance, trees should be planted in their permanent positions whilst young[11].

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Cultivation | Propagation | General Uses
Medicinal | Edible Uses

The information above has been supplied solely via the hard work and dedication of the team at 'Plants for a Future'.
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