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].

General Uses: A mulch of the leaves repels slugs, grubs etc, though fresh leaves should not be used as these can inhibit plant growth[20]. Oak galls are excrescences that are sometimes produced in great numbers on the tree and are caused by the activity of the larvae of different insects. The insects live inside these galls, obtaining their nutrient therein. When the insect pupates and leaves, the gall can be used as a rich source of tannin, that can also be used as a dyestuff[4]. The branches have been used to make rims for twined work baskets[257]. The acorn meal has been used to mend cracks in clay pots[257]. The seed cups are used as buttons[5]. Wood - hard, heavy, strong, brittle. It has a strong cross-grain and is difficult to split[229]. Of little commercial value, it is used mainly for fuel[82, 229].

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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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