English oak Fagaceae Quercus robur L. Listen to the Latin symbol: QURO2 Other Fact Sheets
Leaf: Alternate, simple, obovate to oblong, 4 to 6 inches long, 3 to 7 pairs of rounded lobes with sinuses going halfway to midvein, very small ear-lobes at leaf base, very short petiole, dark shiny green above, paler blue-green beneath.
Flower: Species is monoecious; males are slender yellow-green catkins 2 to 3 inches long; females are very small, in clusters of 2 to 4 in leaf axils, appear in early spring with the leaves.
Fruit: Acorn, 3/4 to 1 inch long, narrow, borne singly or in clusters on a long stalk, cap covers about 1/3 of acorn, matures in one season.
Twig: Moderate, yellow-brown, smooth; brown buds are angled, short and round with each scale edged in light brown.
Bark: Gray-brown, and becoming deeply fissured with age.
Form: A large tree with a round crown that can reach over 100 feet tall.

Looks like: white oak - Oregon white oak
leaf flower fruit twig bark form1 map
Additional Range Information:
Quercus robur is planted in the USDA hardiness zones shown above and may seed into the landscape. See states reporting English oak.
External Links:
USDA Plants Database
Horticulture
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
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