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Quercus douglasii

Blue Oak

Recalcitrant seeds need refrigeration. Since shipping times are out of our control, we are not liable for seed condition upon arrival.

  • Quercus douglasii
Please select the quantity desired, and we will advise availability and price as soon as possible.
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Seed lots

0.1 lb

Details

Germination:
83%
Germination test:
cut
Purity:
99%
Seeds per lb:
72
Quantity:
0.11 lb
Collected in:
California
Zone 524
Crop year:
2022
Min. hardiness zone:
8
Inventory ID:
1209
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No Export to These Countries

New Zealand

Growing Info

Scarification
Scarification: Soak in water, let stand in water for 24 hours
Stratification
Stratification: cold stratify for 60 days , or until radicle emergence
Germination
Germination: sow 1-2" deep, tamp the soil, mulch the seed bed

Other: fall sowing in mulched beds is prefered to artificial stratification 

The Quercus douglasii Blue Oak is a unique oak tree only found in California. It is endemic to the foothills surrounding the Central Valley of California and certain locations in the California Coast Ranges. Individual trees over 500 years old have been recorded making it one of the oldest trees in the area. Recent research has found several unlogged stands of Blue Oak woodlands, suggesting there may be over 500,000 acres of such old growth forests in California. The name Blue Oak derives from the dark blue-green tint of its leaves, which are deciduous, 4–10 cm long and entire or shallowly lobed. Quercus douglasii prefers dry soil and plenty of sunlight, making it the most drought-tolerant of California's deciduous oaks. It also serves as an essential component of mixed oak forests and savanna, which support a diversity of ecological biodiversity within the California Floristic Province.

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(315) 497-1058
269 NY-34 Locke NY 13092
seed@sheffields.com

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