Quercus garryana
Common name:
Oregon White Oak
Garry Oak
Pronunciation:
KWER-kus gar-RI-ana
Family:
Fagaceae
Genus:
Type:
Broadleaf
Native to (or naturalized in) Oregon:
Yes
- 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.
- There is a shrubby form, Q. g. var. breweri (Brewer's Oak), that occurs in Siskiyou region of northern California and southern Oregon.
- 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
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in habitat, spring
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branch, spring
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male catkins and expanding leaves
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female flowers
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in habitat, oak savanna
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plant habit
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plant habit
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leaves
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leaf
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acorn development
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ripening acorns
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leaves, fall
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acorns and leaf, fall
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trunks in a landscape
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trunk, bark
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trunk, bark of very old tree
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plant habit, winter
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winter twigs, buds
