Willow Oak
Quercusphellos 'Hightower'

Category
Trees

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

Sun Exposure
Full Sun

Foliage
Deciduous

Foliage Color

Height
over 40 ft. (12 m)

Spacing
over 40 ft. (12 m)

Hardiness
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
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)

Where to Grow

Danger
Parts of plant are poisonous if ingested

Bloom Color
Green

Bloom Characteristics

Bloom Size

Bloom Time
Mid Spring

Other details

Soil pH requirements
4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)

Patent Information
Patented

Propagation Methods
From semi-hardwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
By grafting

Seed Collecting
Allow unblemished fruit to ripen; clean and dry seeds
Properly cleaned, seed can be successfully stored