Pin Oak

Quercus palustris

Fagaceae · broadleaf deciduous tree · introduced

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.

Plant Profile

Size & Form

Height
60–75 ft
Spread
26 ft
Growth Rate
Fast
Size at 20 yr
40 ft
Lifespan
Moderate

Site Requirements

Light
Full Sun
Soil Drainage
Wet Tolerant
Soil pH
4.5-6.5
Water
High
Drought Tolerance
Low
Hardiness
Zones 4a–8b

Ornamental Interest

Bloom Time
April
Fall Color
Bronze, red, russet
Origin
from Massachusetts to Delaware, west to Wisconsin and
Watch for this season

Peak Spore Production and Dispersal

Active Conidial Spread

Active Infection & Secondary Spread

Active Below-ground Growth

+ 3 more — see full disease and pest lists below

Diseases: Regionally Documented (13)

Pests: Regionally Documented (14)

Phenological Calendar

View full calendar (8 stages)
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
Data Maturity
Structured Multiple sources. Expert review underway.