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Swamp White Oak

Quercus bicolor

Fagaceae · broadleaf deciduous tree · native

Last updated

Data Coverage 3 of 6 dimensions
Site Data
Threats
Cultivars
Phenology
GDD Thresholds
Puget Sound

Quercus bicolor (Fagaceae) is a deciduous tree native to eastern North America from Quebec to Minnesota and south to Georgia and Arkansas. It grows to about 75 feet tall with a broad, rounded crown and distinctive bicolored leaves: dark green above with pale, silvery-white felt beneath. The bark becomes deeply furrowed and shaggy with age.

Swamp white oak grows in full sun on moist to wet, acidic soils (pH 4.5 to 8.5) and tolerates seasonal flooding, clay, and poorly drained sites. It is one of the most adaptable oaks for wet conditions. Drought tolerance is moderate once established. Fall color is yellow to bronze. The acorns are among the sweetest of the white oaks and are important wildlife food. Hardy in Zones 4a to 8b.

Quick Facts

Height
75 ft
Growth Rate
Fast
Light
Sun to Part Shade
Soil
Wet Tolerant
Water
High
Hardiness
Zone Zones 4a–8b
Bloom Time
April
Origin
from Quebec, Pennsylvania

Phenological Calendar

Stage Typical Window
Bud break BBCH 07 Feb 15-Mar 15
Leaf emergence BBCH 11 Mar 1-Apr 1
Bloom start BBCH 61 Mar 1-Mar 31
Bloom end / petal fall BBCH 69 Apr 1-Apr 15
Fruit/seed development BBCH 71 Jun 1-Aug 31
Fruit/seed maturity BBCH 85 Sep 1-Nov 30
Fall color / leaf senescence BBCH 93 Oct 1-Nov 15
Dormancy BBCH 97 Nov 15-Feb 28

Diseases (14)

Pests (14)