English Oak (Common Oak)
Quercus robur · Deciduous Broadleaf Hardwood
Plant Family
Fagaceae
Tree Category
Shade Tree / Forest Tree
Variety / Cultivar
Species-typical (wild type seedling)
Hardiness Zones
USDA Hardiness Zones 4 through 8.
About This Tree
A long-lived, majestic tree that develops a massive spreading crown with rugged, twisting branches. In its sapling stage, it exhibits an upright habit with clustered, lobed leaves. Produces acorns on long stalks (peduncles), distinguishining it from the sessile oak.
Leaf Characteristics
Simple, alternate leaves with 3-7 pairs of rounded lobes and very short stalks (auriculate base). New growth appears reddish-bronze, maturing to dark green. Length is typically 7-14 cm.
Bark Characteristics
On this sapling, the bark is smooth and greyish-brown. At maturity, it becomes thick, deeply fissured, and rugged with vertical rectangular plates.
Growing Information
Origin Region
Native to Europe, North Africa, and Western Asia. Widely adapted to temperate climates worldwide.
Growing Season
Bud break in late spring; flowers (catkins) appear with leaves in April-May. Fruit (acorns) ripens in autumn before leaf drop and winter dormancy.
Sunlight & Water Needs
Full sun is required for best growth. Prefers deep, well-drained loamy soils but is remarkably adaptable to various soil types including heavy clay. Moderate water needs with good drought tolerance once established.
Mature Size
Reaches 20-40 meters (65-130 feet) in height with a similar spread. Growth rate is moderate in youth, slowing with age. Can live over 500-1,000 years.
Special Characteristics
Highly valued for durable heartwood used in construction and barrels. Excellent fall color is generally a late-season tan to russet brown. Extremely long-lived and culturally significant across Europe.
Wildlife & Ecology
A keystone species supporting hundreds of insect species. Acorns provide vital food for jays, squirrels, and small mammals. Provides nesting sites for numerous bird species and supports diverse lichen and fungal communities.