Object Details
Description
Willow oak is a popular shade tree in cities due to its ability to withstand adverse growing conditions. It has long, narrow, willow-like leaves.
This oak is listed as Threatened in Illinois, and Endangered in New York and Pennsylvania.
Hardiness
-20 - 30 F
Bloom Time
April
Provenance
Uncertain
Accession Number
2011-0884A
Restrictions & Rights
Usage conditions apply
Life Form
Deciduous tree
Average Height
40-75'
Bark Characteristics
Dark gray, furrowed bark.
Bloom Characteristics
Yellow-green male and female catkins emerge with leaves.
Fall Color
Yellow-brown
Foliage Characteristics
Simple, alternate, elongated and slender leaves with entire margins. Light green and shiny above, dull and pale beneath.
Fruit Characteristics
Small, round, brown acorns grow singularly or in pairs and have shallow caps. The overlapping scales which make up the cap are hairy and dark red. Introduced trees rarely produce acorns.
Structure
Oval, round
Range
C and E USA
Habitat
floodplains commonly flooded in winter and spring, on ridges and high flats surrounded by swamp or major rivers
See more items in
Smithsonian Gardens Tree Collection
On Display
National Museum of American History
Common Name
willow oak
peach oak
Group
[vascular plants]
Class
Equisetopsida
Subclass
Magnoliidae
Superorder
Rosanae
Order
Fagales
Family
Fagaceae
Genus
Quercus
Species
phellos
Data Source
Smithsonian Gardens
Topic
Trees
Living Collections
Link to Original Record
Record ID
ofeo-sg_2011-0884A