Oregon Maple Acer macrophyllum

Bigleaf maple is a deciduous tree in the maple family (Sapindaceae) tree native to moist dry sites on the west coast of North America from Alaska, through British Columbia, and the west coast of the U.S.A.  Most commonly found growing in moist woods and along streams in the lower elevations of the coastal ranges and northern Sierra Nevada mountains. It is considered to be the most massive of the various species of maple found in North America. growing to a height and width of 40 to 75 feet.

Easily grown in moist, slightly acidic, well-drained soils in full sun to part shade. Prefers moist, well-drained soils in cool summer temperatures reminiscent of those typically found in its native environment in the Pacific Northwest, but tolerates a variety of soil conditions ranging from moist to somewhat dry. Does not always perform well in the hot and humid summer conditions found in the southeastern U.S. where it is not recommended for planting south of USDA Zone 7.

Excellent shade tree for large landscapes and parks. Shallow spreading roots can crack sidewalks and driveways. Trees in moist forested areas in western parts of the Pacific Northwest are often covered with mosses, lichens, and ferns which add visual interest to the landscape.

Insects, Diseases, and Other Plant Problems:  No serious problems. See potential insect and disease problem fact sheets to the left.

The Clemson Cooperative Extension Home and Garden Information Center has a factsheet on common maple diseases and insect pests.