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Quercus wislizeni A. DC.
Interior live oak
USDA Symbol: QUWI2
USDA Native Status: L48 (N)
Interior live oak is an intricately-branched evergreen that, in time, can reach 50 ft. The broad crown can be as wide as the tree is high. Smooth to spiny-toothed leaves are glossy and dark green. This, together with the reddish-brown bark, give the tree a formal appearance. Evergreen tree with short trunk and broad, rounded crown of stout, spreading branches; sometimes a shrub.
This species is named for its discoverer, Friedrich Adolph Wislizenus (1810-89), a German-born physician of St. Louis, Missouri. Although slow-growing, Interior Live Oak is planted as an ornamental. Deer browse the foliage, and the wood is used for fuel.
Plant CharacteristicsDuration: Perennial Habit: Tree Leaf Complexity: Simple Flower:
Fruit: Size Class:
Bloom InformationBloom Time: Mar , Apr , May
DistributionUSA: CA Native Distribution: CA
Sierran foothills and inner Coast Ranges, s. to Baja CA. Native Habitat:
Valleys & slopes below 5000 ft.
Growing ConditionsLight Requirement: Sun
Soil Moisture: Dry
Soil Description: Dry soils.
Conditions Comments: Not Available
Oaks are most often propagated from seed. No pretreatment is necessary. Plant immediately – outdoors or in deep containers to accomodate long initial taproot. Many oaks require cold temperatures to initiate shoot
development. Protect outdoor beds with Seed Collection:
Best quality acorns are picked or shaken from the tree. Collect when color has changed to brown. Best if sown immediately as acorns lose viability quickly in storage. Short-term storage in moist, shaded saw dust or sand. Acorns to be sown immediately can be soaked in hot water for 15 min. to prevent weevil infestation. Stored seed should be fumigated with methyl bromide. Commercially Avail:
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Santa Barbara Botanic Garden
- Santa Barbara, CANative Seed Network
- Corvallis, OR
Record Last Modified: 2007-01-01
Research By: TWC Staff