|Invasive Amur Maple – Acer ginnala|
This species has been planted because for its hardiness and fall foliage; however it is an invasive species in the Eastern U.S.
|Amur Maple – Acer ginnala|
Native Origin: China, Manchuria, and Japan
Description: Amur maple is a small deciduous tree in the maple family (Aceraceae) that reaches to approximately 25 feet in height and 15 to 28 feet in width. Bark is grayish brown, smooth with darker striation furrows with age. Typically it is multi-stemmed with a spreading umbrella-shaped crown. Opposite, simple leaves with 3 lobes grow 2 to 4 inches in length and have a bright green color turning yellow to scarlet red in fall. Panicle of fragrant, long-stemmed, pale yellow or creamy, tall flower clusters appear in early spring when leaves are also present. Paired winged seeds are 3/4 to 1 inches long, hanging at very tight angles or nearly parallel and are dispersed to the wind when seeds ripen in early fall.
Habitat: This is one of the hardiest of the maple species. It can grow in full sun or partial shade and prefers moist, well drained soils, but also tolerates dryness and soil pH of 6.1 to 7.5. It is salt tolerant and hardy in zones 3 to 8.
Distribution: This species is reported from states shaded on Plants Database map. It is reported invasive in CT, IL, MA, MO, NY, VT, and WI.
Ecological Impacts: This species has been planted because for its hardiness and brilliant red, scarlet or orange fall foliage; however it has escaped cultivation. It is an invasive species in the Eastern Region. It has the potential to displace native shrubs and under story trees in open forests, and shades out native species in prairie habitats.
Control and Management:
Invasive Species on National Forests / Invasive Plants
Insect Damage and Disease
Many invasive species arrive in the United States through international trade. Therefore, the Forest Service must work with international partners to (1) stem the flow of invasive species into the country, (2) discern and apply biological controls for invasives that have already established and spread, and (3) protect island ecosystems, which are especially vulnerable due to their high percentage of unique species and evolutionary isolation. — From the USDA Forest Service, Forest Health Staff, Newtown Square, PA. WOW 05-09-05
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Family Aceraceae – Maples
The Maples are some of our most familiar and beloved trees. Most are native to the far east: China, Japan, Korea, Manchuria. Maples produce a distinctive winged fruit called a samara, also commonly known as helicopters or whirlybirds.
Tree Encyclopedia | Tree Index | Maple Index