Ring-Cup Oak

Quercus glauca

Native to:
China, Hainan, India, Japan, Korea, Laos, Myanmar, Nansei-shoto, Nepal, Taiwan, Vietnam

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Fagaceae
Genus:
Quercus
Species:
Quercus glauca
USDA Symbol:
QUGL2

Growth Characteristics

Height:
1500 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Food Forest:
Contains edible parts

Keystone Species Ranking

Caterpillar Keystone:
★★★★★ Butterfly & moth species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
native to forested slopes and valleys

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
30–90 days
Notes:
Seeds benefit from cold stratification for 30-60 days to break dormancy.