Quercus phellos

Willow Oak

Fagaceae

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Habitat

  • native to the eastern coast of the United States from New York down through Florida and across to Texas
  • zone 6, possibly warmer parts of 5

Habit and Form

  • a medium-sized, deciduous tree
  • 50 to 70' tall
  • 30' to 50' wide
  • pyramidal when young
  • rounded, broad-rounded or upright rounded when mature
  • fine texture
  • rapid growth rate

Summer Foliage

  • alternate leaf arrangement
  • simple, deciduous leaves
  • entire leaf margins
  • lanceolate leaf shape
  • 2" to 5" long
  • bristle-tipped leaf apex
  • dark green leaf color

Autumn Foliage

  • yellow to bronzy-red fall color
  • showy
  • color develops late
  • color is long lasting

Flowers

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

Fruit

  • acorn in pairs on singly
  • 0.5" across or less
  • pubescent
  • bowl-like cap is striated with brown and black bands
  • acorns mature in a second season
  • fruit can be numerous
  • attracts squirrels

Bark

  • gray-brown bark color
  • shallow ridges and furrows
  • slender, smooth, reddish brown stems

Culture

  • easily transplanted during dormant season
  • prefers moist, well-drained soil
  • full sun
  • drought tolerant
  • urban tolerant

Landscape Use

  • parking lot island
  • street tree
  • buffer strip
  • shade tree
  • for large area

Liabilities

  • no serious pest problems
  • root rot
  • borers and trunk canker
  • orange-striped oakworm

ID Features

  • sharp-pointed, ovoid, imbricate buds
  • buds are chestnut brown and 0.25" long
  • alternate leaf arrangement
  • leaves are not lobed and have entire leaf margins
  • bristle-tipped leaf apex
  • willow-like leaves
  • small acorns

Propagation

  • by seed
  • by cuttings

Cultivars/Varieties

'Pillow Oak' - A purported hybrid with Quercus palustris, this seedling selection features intermediate leaf shape and rapid growth. It was discovered as a cultivated plant by a South Carolina nurseryman.

© Copyright Mark H. Brand, 1997-2015.

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Citation and Acknowledgements: University of Connecticut Plant Database, http://hort.uconn.edu/plants, Mark H. Brand, Department of Plant Science and Landscape Architecture, Storrs, CT 06269-4067 USA.