Swamp White Oak
Quercus bicolor
Fagaceae · broadleaf deciduous tree · native
Last updated
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
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 |