Bur Oak or Mossy-overcup Oak is a deciduous oak with a wide range throughout the United States and the southern provinces of Canada but absent from the west. A large tree in its native habitat, it is nevertheless a slow-growing species and does best on rich bottomlands. It is much smaller on poor or thin soils, and sometimes is more shrublike in such habitats. Mature trees are open and rounded. The bark is medium gray and grooved.

The leaves are 3-6 inches in length and up to 5 inches in width; they are lobed with the basal part of the leaf most deeply indented and the tip rather broad. The inconspicuous flowers are greenish-yellow catkins.

The large acorns are up to two inches in length. The cup wraps around the nut and often is fringed.

These trees are grown from seed collected in western Minnesota. They are two years old.

Size: Gallon
Family: Fagaceae
Scientific Name: Quercus macrocarpa

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