Quercus garryana
Common name: 
Oregon White Oak
Garry Oak
KWER-kus gar-RI-ana
Native to (or naturalized in) Oregon: 
  • Deciduous tree, 40-90 ft (12-27 m), broad spreading, rounded crown, rugged, heavy ascending, crooked branches, often shrubby when young (less than 25 years).  Leaves alternate, simple, 5-15 cm long, dark green, round lobed, autumn color is saddle brown, occasionally tinted gold or dull red.  Fruit (acorn) with a short stalk or sessile, ovate, smooth, 2.5.-3 cm long, apex rounded, murcronate (small, sharp point), about 1/3 enclosed by the shallow cup; ripens the first year.
  • Sun, likes dry soil in summer, deep tap root, summer watering can cause root rot, therefore not suitable in an irrigated lawn.  My not make a great street tree. Good shelter for rhododendrons.  Leaves are susceptible to insect induced galls.  Like many other oaks, they also occasionally form large galls, as wide as 5 cm or more.  These so-called 'oak apples' are in response to the placement of the eggs of a specific wasp on the midrib of leaves.
  • Hardy to USDA Zone 6      Native to western British Columbia, Washington, Oregon and northwestern California.
  • garryana: named by David Douglas to honor Nicholas Garry, director, and later deputy governor, of the Hudson's Bay Company; Fort Garry, now Winnipeg, Canada.
  • Oregon State Univ. campus: grove of old trees south of Dryden Hall on 35th S, younger tree on the west side of the 30th St. "parkway" east of the grove.
Click image to enlarge
  • in habitat, spring

    in habitat, spring

  • branch, spring

    branch, spring

  • male catkins and expanding leaves

    male catkins and expanding leaves

  • female flowers

    female flowers

  • in habitat, oak savanna

    in habitat, oak savanna

  • plant habit

    plant habit

  • plant habit

    plant habit

  • leaves


  • leaf


  • acorn development

    acorn development

  • ripening acorns

    ripening acorns

  • leaves, fall

    leaves, fall

  • acorns and leaf, fall

    acorns and leaf, fall

  • trunks in a landscape

    trunks in a landscape

  • trunk, bark

    trunk, bark

  • trunk, bark of very old tree

    trunk, bark of very old tree

  • plant habit, winter

    plant habit, winter

  • winter twigs, buds

    winter twigs, buds