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Growing Info

Scarification: Soak in water, let stand in water for 24 hours

Stratification: cold stratify for 60 days , or until radicle emergence

Germination: sow 1-2" deep, tamp the soil, mulch the seed bed

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

Native to: California

Native

Introduced

Quercus douglasiiQuercus douglasii

Blue Oak

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

In Stock: 15.239 lb (Total:15.239lb)

Quercus douglasii

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15.24 lb CA

Details

Germination:

98%

Germination test:

Cut (Full Seed)

Purity:

99%

Seeds per lb:

Quantity:

15.24 lb

Collected in:

California

Crop year:

2025

Min. hardiness zone:

Item ID:

1836978

Characteristics

No Export to These Countries

New Zealand

Growing Info

Scarification: Soak in water, let stand in water for 24 hours

Stratification: cold stratify for 60 days , or until radicle emergence

Germination: sow 1-2" deep, tamp the soil, mulch the seed bed

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

Native to: California

Native

Introduced

Discover the majesty of Quercus douglasii, commonly known as Blue Oak, an emblem of California's natural beauty. This remarkable, drought-tolerant deciduous tree thrives in the foothills surrounding the Great Central Valley, showcasing its distinctive blue-green leaves that offer a calming, cool hue amid the summer heat. Revered for its ecological contributions, Blue Oak supports local wildlife—providing essential food and shelter for birds, squirrels, and insects, and serving as a host plant for various butterfly and moth species.

Slow-growing and enduring, Blue Oak can reach heights of over 50 feet (though typically around 30 ft), making it an investment for any landscape. Ideal for dry, well-drained slopes, it also offers utility as a bank stabilizer and is deer resistant. With textured pale gray bark and leaves turning subtle pastel shades in fall, this tree is both an ornamental treasure and a nod to cultural heritage—its acorns once a staple for Native Americans.

Endemic to California and frost hardy to USDA zone 5, Blue Oak is a testament to nature's resilience and an opportunity for homeowners and nature enthusiasts to savor its long-term rewards.