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Blue Oak (Quercus douglasii)

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Family: FAGACEAE
Genus: Quercus
Species: Blue Oak (Quercus douglasii)

Blue Oak Species Description

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This species is native to North America north of Mexico.

Allergenicity: Blue Oak (Quercus douglasii) is a severe allergen.

Pollination: Occurs in following seasons depending on latitude and elevation: Spring.

Angiosperm - Flowering Dicot: Plants in this group have two embryonic leaves (dicotyledons). Examples of dicotyledons are beans, buttercups, oaks, sunflowers, etc.

Tree: A large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age).

Perennial: Living for many years.

Woody Stem: Non-herbaceous. Lignified.

Blue Oak Species Usage

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Butterfly Plant: A plant that is known to attract butterflies.

Related Links

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More Blue Oak (Quercus douglasii) imagesby Jessie M. Harris from BONAP

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Blue Oak Species Location

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The shaded areas on the map indicates where the species has been observed in the United States. Click the map to see a full scale version of these allergy areas.
  - Native, observed in a county
  - Introduced, observed in a county
  - Rarely observed
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