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Quercus glauca (Ring-cupped Oak seed) Sheffield`s Seed Co., Inc.

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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" deep, tamp the soil, mulch the seed bed| sow seed 3/4" deep, tamp the soil, mulch the seed bed

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

Native to: China, Japan, Korea, Korea (South)

Native

Introduced

Quercus glaucaQuercus glauca

Japanese Blue Oak, Ring-cup Oak, Ring-cupped Oak

In Stock: 2.585 lb (Total:2.585lb)

Quercus glauca

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2.58 lb TX

Details

Germination:

71%

Germination test:

Cut (Full Seed)

Purity:

97%

Seeds per lb:

310

Quantity:

2.58 lb

Collected in:

Texas

Crop year:

2025

Min. hardiness zone:

Item ID:

1836571

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" deep, tamp the soil, mulch the seed bed| sow seed 3/4" deep, tamp the soil, mulch the seed bed

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

Native to: China, Japan, Korea, Korea (South)

Native

Introduced

Discover the enchanting Quercus glauca, commonly known as Ring-cupped Oak. This broadleaf evergreen is a striking addition to any landscape, native to the serene forests of Japan, China, Korea, and the Himalayas. Hardy in USDA Zones 7-9, Ring-cupped Oak thrives in rich, well-drained soils with medium moisture levels and full sun exposure, yet it gracefully adapts to a variety of soil types, including clay.

Standing at a height of 20-30 feet with a spread of 10-15 feet, this oak forms a unique upright-oval to rounded crown, perfect as a shade or street tree. Its glossy, dark green leaves with toothed apices unfurl with a delicate bronze or purplish-green hue, adding a dynamic seasonal interest. As the seasons change, the leaves may display a charming yellow-green tint in winter. In spring, witness the subtle emergence of yellowish-green catkins, followed by the development of distinctive acorns with ringed cups.

Low maintenance with good pest resistance, Ring-cupped Oak stands resilient against many common diseases and pests. Whether utilized as a singular shade tree or a tall, bushy shrub, its ornamental charm and adaptability make it a cherished choice in gardens and landscapes. For a touch of East Asian elegance, consider Quercus glauca—the epitome of serene beauty and hardy functionality.