Pin Oak
Quercus palustris
Fagaceae · broadleaf deciduous tree · native
Last updated
Quercus palustris (Fagaceae) is a deciduous tree native to eastern North America from Massachusetts to Wisconsin and south to Oklahoma and Virginia. It grows 60 to 75 feet tall with a distinctive pyramidal shape: upper branches ascend, middle branches are horizontal, and lower branches droop. The deeply lobed, bristle-tipped leaves turn red to bronze in autumn.
Pin oak is one of the most widely planted native oaks due to its fast growth, attractive form, and easy transplanting (fibrous root system, unlike most oaks). It thrives in full sun on moist, acidic soil. On alkaline soils it develops severe iron chlorosis (interveinal yellowing). The persistent lower branches and persistent dead leaves (marcescence) can be drawbacks in some landscape settings. 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 15-May 15 |
| Bloom end / petal fall BBCH 69 | Apr 15-May 31 |
| 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 |