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Bur Oak, Mossycup Oak, Mossy Overcup Oak, Prairie Oak
Quercus macrocarpa

Fagaceae (white oak group)

Bur Oak is a majestic tree of the tallgrass priarie that once covered central North America. It grows best in deep limestone soils of riverbanks and valleys but it will adapt to many different environments. It has a long taproot which makes it hard to transplant but also very drought-tolerant. It is also fast growing and long-lived. Bur oak is noted for its very large leaves and acorns: the leaves are from one-half to one foot long, and acorns can be as large as 2 inches long and wide, enclosed in a cup with fringe on the edge. It casts deep shade.

Plant Habit or Use: large tree

Exposure: sun

Flower Color: catkins 4 to 6 in. long

Blooming Period: spring

Fruit Characteristics: large acorn to 2 in. around with fringed cup

Height: 60 to 70 ft.

Width: 60 to 70 ft.

Plant Character: deciduous

Heat Tolerance: very high high

Water Requirements: medium low

Soil Requirements: adaptable

USDA Hardiness Zone: 3

Additional Comments:

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