Acer macrophyllum, the bigleaf maple[2] or Oregon maple, [3] is a large deciduous tree in the genus Acer. It is native to western North America. In addition to uses by animals, it is of some culinary and woodworking interest.

Emerging burgundy in spring, the deeply-lobed leaves, up to 12 in. across (30 cm), mature to dark green before turning brilliant shades of orange and yellow in the fall. These leaves are the biggest ever found on any species of maple, hence the common name.

Acer macrophyllum Pursh. (AY-ser mak-ro-FILL-um) Names: Big-Leaf Maple, sometimes called Oregon Maple, derives both its common name and its scientific name, macrophyllum, from the fact that it can have leaves up to 12 inches across–the largest of any maple!

Deciduous tree, 50-75 (100) ft [15-23 (30) m], ascending, becoming rounded, shallow root system. Leaves, opposite, simple, large (20-30 cm across, the largest leaves of all the maples), lustrous dark green above, pale beneath, 3-5 toothed lobes, petiole yields milky sap when detached.

Deeply 5-lobed (occasionally 3-lobed) leaves (to 8-12” long and wide) emerge with burgundy tones in spring, mature to glossy medium to deep green, and finally turn yellow to yellow-orange in fall. Largest leaves of any maple. Petioles contain a milky sap.

Apr 26, 2021 · The bigleaf maple (Acer macrophyllum), also known as the Oregon maple, is a deciduous, long-lived tree native to the Pacific Northwest. True to its name, it dangles unusually large, 5-lobed, palmate (palm-shaped) leaves from its branches.

Bigleaf maple (Acer macrophyllum) is a fast-growing deciduous tree native to the Pacific Coast and parts of inland California. It provides dense summer shade and brilliant fall color in colder regions. Its signature feature is its massive, lobed leaves, which can grow nearly two feet across.

Acer macrophyllum, bigleaf maple. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer).

Acer macrophyllum generally occurs in coarse, gravelly, dry to moist sites, often mixed with red alder, western redcedar, Douglas fir, and western hemlock. It attains its best development near borders of foothills, low mountain streams, and in alluvial river bottoms. Bigleaf maple is an extremely flood tolerant species. Establishment

Acer Macrophyllum is a deciduous Tree growing to 30 m (98ft) by 12 m (39ft) at a fast rate. See above for USDA hardiness. It is hardy to UK zone 6. It is in flower in April, and the seeds ripen in October.