Northern Red Oak

Quercus rubra

Fagaceae · broadleaf deciduous tree · native

Last updated

Quercus rubra (Fagaceae) is a large deciduous tree native to eastern North America from Nova Scotia and Pennsylvania west to Minnesota and Iowa. It grows to about 81 feet tall with a 59-foot spread, forming a broad, rounded crown at maturity. The leaves have pointed, bristle-tipped lobes (red oak group) and turn russet to red in autumn. Bark on mature trees develops flat-topped ridges separated by shallow furrows.

Northern red oak grows in sun to part shade on a variety of soils (pH 4.3 to 7.3) with moderate water needs. It is fast growing for an oak and transplants more easily than many species. The largest specimens develop in deep, fine-textured soils in protected ravines. It is one of the most important timber oaks and a widely planted urban and shade tree. Hardy in Zones 3b to 8b.

Quick Facts

Height
81 ft
Spread
59 ft
Growth Rate
Moderate
Light
Sun to Part Shade
Soil
Adaptable
Water
Moderate
Hardiness
Zone Zones 3b–8b
Bloom Time
May
Fall Color
Brown, red, russet, yellow
Origin
Nova Scotia to Pennsylvania, west to Minnesota and Iowa
Watch for this season

Primary Spore Release

Spring Canker Activation

Spring Spore Germination and Infection

Spore Release (Fall & Spring Rains)

+ 4 more — see full disease and pest lists below

Field Observations

Quercus rubra - bud break
Field Observation
Quercus rubra · Red Oak
bud break
April 20, 2026 · Issaquah · 1,509 GDD₃₂ · BBCH 07

Phenological Calendar

Stage Typical Window
Bud break BBCH 07 Mar 15-Apr 15

Diseases: Regionally Documented (13)

Pests: Regionally Documented (14)

Data Maturity
Structured Multiple sources. Expert review underway.