Northern Red Oak
Quercus rubra
Fagaceae · broadleaf deciduous tree · introduced
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.
Plant Profile
Size & Form
Site Requirements
Ornamental Interest
Field Observations
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 (1 stages)
| Stage | Typical Window |
|---|---|
| Bud break BBCH 07 | Mar 15-Apr 15 Observed |
