Quercus Species, Japanese Blue Oak, Ring Cupped Oak
Quercusglauca

Category
Trees

Water Requirements
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Full Sun
Sun to Partial Shade

Foliage
Evergreen
Provides Winter Interest
Textured

Foliage Color

Height
20-30 ft. (6-9 m)

Spacing
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)

Hardiness
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)

Where to Grow

Danger
Parts of plant are poisonous if ingested

Bloom Color
Inconspicuous/none

Bloom Characteristics

Bloom Size

Bloom Time
Mid Spring

Other details

Soil pH requirements

Patent Information
Non-patented

Propagation Methods
From seed; direct sow outdoors in fall

Seed Collecting