BugwoodWiki Article

English oak
Quercus robur L.

Overview

Appearance
Quercus robur has a wide spreading crown, short sturdy trunk, and deeply fissured gray brown bark. It can grow to 140 ft (42.7 m) tall with a rounded spread of 80 ft (24.4 m) or more, but is usually smaller in cultivation. It is native to Asia and Europe.
Foliage
The small deciduous leaves, 3-5 in (7.6-12.7 cm) long, with 3-7 pairs of rounded lobes, and extremely short petioles. They remain deep green long into autumn before turning brown and then persisting on the tree well into winter.
Flowers
The flowers are hanging catkins which appear with the emerging leaves in early spring.
Fruit
The fruits are acorns which are elongate, about 1 in (2.5 cm) long, with a cup that covers 1/3 of the nut. They are born singly or in clusters of 2-5 which dangle on a single long 1-4 in (5.1-10.2 cm) peduncle.
Ecological Threat
Q. robur is easily grown in average, medium, well-drained soils in full sun. It prefers moist well-drained soils, but adapts to a wide range of soil conditions. Can take up to 25-30 years for this tree to bear a first crop of acorns.

Image Sets
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Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Hamamelidae
Order: Fagales
Family: Fagaceae
Genus: Quercus

Other System Links

Plants: QURO2
GRIN: 30739
ITIS: 19405
NPDN Host: 35487

Synonyms and Other Names

Other Common Names:
pedunculate oak

Categories

Category: Hardwood Trees