Bur Oak

Scientific Name: Quercus macrocarpa

Order: Fagales

Family: Fagaceae

Type: Tree

Endangered Status: Least concern

Number of Recorded Individuals at the Zoo: 40

The long-living bur oak has broad-spreading branches and develops thick bark tolerant of once-common prairie fires. Its large acorns have a fringed burry cup, can grow one-and-a-half-inches long, and serve as an important food source for many birds and small mammals. The tree features thick, round-lobed, green leaves that turn amber in the fall. Many insects, birds, and squirrels use the tree’s bark, stems, and foliage for shelter.

Native Range
Northern and Central United States, Southeast Canada

USDA Hardiness Zone
3–8

Average Mature Height
70 feet

Flower Color
Yellow-green

Flowering Months
April–May

Supports
Birds, small mammals, and butterflies