Floridata Plant Encyclopedia

A Floridata Plant Profile 1126 Quercus phellos

Common Names: willow oak Family: Fagaceae (beech Family)
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willow oak
The stately willow oak is a beautiful choice for large scale landscapes.
willow oak leaves
The willow oak's lance shaped leaves are similar in size and shape to those of many of the willow species like black willow (Salix nigra).

Description

Willow oak is a medium to large sized deciduous tree with lance shaped leaves that are quite willowlike, less than 1 in (2 cm) wide and 3-5 in (6-13 cm) long. The central vein (or midrib) of the leaf extends a little bit past the leaf tip as a tiny bristle. There are tufts of hairs in most of the axils between the midrib and the lateral veins on the undersides of the leaves. Leaf margins are entire and the petioles are very short. The acorns are in pairs or solitary, about a half inch (1 cm) long, with a cup that encloses only about one-fourth of the nut. Acorns mature in their second season. Willow oaks can get as tall as 130 ft (39 m), but are more commonly 40-60 ft (12-18 m) tall. The largest known (National Champions) include a 132 ft (13 m) tall behemoth near Noxubee, Mississippi.

Willow oak is very similar looking to laurel oak (Q. hemisphaerica) but the latter has generally wider leaves and lacks the tufts of hairs in the axils between the central and lateral veins on the undersides of the leaves.

Location

Quercus phellos occurs along streams, in bottomlands and in wet woods (sometimes spreading into adjacent fields and fence rows) from Long Island to East Texas. Willow oak is largely absent from the Appalachians, southeast Georgia and the Florida peninsula.

willow oak
Willow oak leaves and bark

Culture

Light: Willow oak can grow in full sun to partial shade. Moisture: Willow oak tolerates moist soils, but not if they are constantly water logged. Hardiness: USDA Zones 6 - 9. Propagation: For best results, sow acorns outside as soon as they ripen in autumn, and expect germination the following spring.

Usage

Willow oaks are often planted along avenues and in larger lawns and parks. Michael Dirr, the famous plantsman from the University of Georgia, considers the willow oak to be the finest oak for form and overall appearance. Trees grown in the forest have long, straight boles, but those grown in the open have a shorter trunk and a dense, broad and rounded crown. These are relatively fast growing trees and have few pest or disease problems. In autumn, the leaves turn shades of yellow, orange and red. The wood is not especially of high quality and is mainly used for fuel and local applications. As with other oaks, the acorns are an important source of food for wildlife, and willow oaks tend to produce abundant crops.

Features

The oaks can be divided into two major groups: members of the white oak group have rounded leaf lobes and tips, and edible acorns that mature in one year; members of the red oak group have bristles on the leaf lobes and tips, and bitter acorns that take two years to mature. Willow oak is in the red oak group.

Steve Christman 1/3/11



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Quercus species profiled on Floridata:


Quercus acutissima

( sawtooth oak )

Quercus alba

( white oak )

Quercus bicolor

( swamp white oak )

Quercus cerris

( Turkish oak, Turkey oak )

Quercus coccinea

( scarlet oak )

Quercus falcata

( southern red oak, Spanish oak )

Quercus geminata

( sand live oak )

Quercus hemisphaerica

( laurel oak, upland laurel oak, damn laurel oak )

Quercus imbricaria

( shingle oak, northern laurel oak )

Quercus laevis

( turkey oak, blackjack oak )

Quercus macrocarpa

( bur oak, mossycup oak )

Quercus michauxii

( swamp chestnut oak, basket oak, cow oak )

Quercus muehlenbergii

( chinkapin oak, yellow chestnut oak, chinquapin oak, yellow oak )

Quercus nigra

( water oak, spotted oak, possum oak )

Quercus nuttallii

( nuttall oak )

Quercus palustris

( pin oak, Spanish oak, swamp oak )

Quercus phellos

( willow oak )

Quercus prinus

( chestnut oak,rock chestnut oak,rock oak,basket oak,tanbark oak )

Quercus robur

( English oak, pedunculate oak, truffle oak )

Quercus rubra

( northern red oak )

Quercus shumardii

( Shumard oak, Shumard red oak )

Quercus velutina

( black oak, quercitron oak, yellowbark oak, yellow oak )

Quercus virginiana

( live oak )

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