Habitat

• native to eastern United States
• hardy to zone 4

Habit and Form

• a medium-sized, deciduous tree
• upright oval crown, open
• 50 to 60' tall
• 50' to 60' wide
• coarse texture
• moderate growth rate

Summer Foliage

• alternate leaf arrangement
• simple, deciduous leaves
• obovate leaf shape
• 4" to 8" long
• 2" to 4
  " wide
• lobed, rounded
• white hairs on leaf underside
• dark green leaf color

Autumn Foliage

• copper to red fall color

Flowers

• monoecious
• male flowers are pendulous yellow-green catkins
• blooms in May
• messy

Fruit

• rounded acorn
• 0.5' to 1" across
• usually found in pairs
• long peduncle
• involucre covers a third of acorn
• attracts wildlife

Bark

• lower branches droop
• yellowish brown stems
• deeply furrowed and ridged bark
• flaky
• dark brown bark color

Culture

• part shade to full sun
• likes swampy situations
• prefers acidic soil
• transplant from container
• drought tolerant

Landscape Use

• shade tree
• lawn tree
• specimen
• park tree
• for large area

Liabilities

• borers oak slug
• caterpillars
• variable oak caterpillars
• gypsy moth
• anthracnose
• canker
• powdery mildew

ID Features

• leaves with rounded lobes
• imbricate, ovate, chestnut brown, 0.25" long buds that are pubescent
• dark brown, flaky bark
• acorns usually found in pairs

Propagation

• by seed

Cultivars/Varieties

'Asjes' (Rosehill®) - This plant is most likely a hybrid with Q. robur (English oak), which it strongly resembles. It is resistant to leaf ailments such as mildew and features a somewhat fastigiate, upright form with lustrous green foliage. The acorns resemble those of English oak.

'Long' (Regal Prince®, a selection of Quercus x warei) - This new selection is the result of a cross with a fastigiate English oak (Quercus robur 'Fastigiata). It is a vigorous upright-oval grower reaching 60' tall and only 25' wide. The foliage is handsome all season with a silvery lower surface. Due to its parentage, this plant is tolerant of a wide range of conditions, including both wet and dry soil.