6/15/2023 0 Comments Amur mapleTiming and spread concerns: Amur maple is still relatively uncommon around the Great Lakes region, so a good defense is the best offence. For local assistance managing woody invasive species, please get in touch with a cooperative invasive species management group or a university extension program. For more detailed information on how to use these techniques, please visit our Management and Control page. The following is a brief overview of management techniques shown to be effective on Amur maple, though there is relatively little information available about management of this species. Yellow = native to the United States but not to the Basin Green = native to part of the Great Lakes Basin Girard’s paperbark maple ( Acer griseum x nikoense )Ī Listed cultivars have the indicated trait, but the straight species (or hybrid) may not. Alternatives for Amur MapleĬanada serviceberry ( Amelanchier canadensis )Īpple serviceberry ( Amelanchier x grandiflora ), ‘Autumn Brilliance,’ ‘Princess Diana,’ ‘Cumulus’Īmerican hornbeam ( Carpinus caroliniana ) Please see our Landscape Alternatives pages for more information about how the WIGL Collaborative selected alternatives. The leaf shape is somewhat similar to the native ninebark ( Physocarpus spp.), but ninebark has alternate leaves, while those of Amur maple are opposite. Amur maple is much smaller at maturity than any native maple species, with smaller samaras. It is most similar to Tatarian maple ( Acer tataricum ), another small exotic maple with unlobed leaves that frequently has a single main stem. Look-alikes: Amur maple can be distinguished from other maples by its leaf shape, particularly the long middle lobe. The small size of the samaras (each side is ¾ – 1” long) along with the coloration can help distinguish from other maples. Samaras are often pink or reddish in the summer, ripening to brown. They are the papery, winged two-chambered samaras characteristic of maples. Fruits appear over the summer and mature in early-to-mid fall. Flowers are fragrant, unlike other maples. Flowers emerging in mid spring are yellowish white, small, and born in small, branched clusters. Leaf edges are toothed, and leaves are dark green in summer, sometimes changing to yellow or red in fall (fall foliage color varies by cultivar and planting situation). Leaves have three lobes, and the middle lobe is much longer than the side lobes. The leaves are opposite each other, and are generally 1 ½ to 3” in length. It is common for this species to grow multiple stems and for the crowns to be as wide as the plants are tall. Plant information taken from the Plants For A Future.Identification: Amur maple is a large deciduous shrub to small tree, generally 15-18’ tall at maturity. Known hazards of Acer ginnala: None known Forests at elevations of 100 - 800 metres in China. Fairly easy from cuttings.Ĭultivation of Amur Maple: Found in many habitats in Korea, especially along streamsides and swampy places. The rooted cuttings must show new growth during the summer before being potted up otherwise they are unlikely to survive the winter. Remove a very thin slice of bark at the base of the cutting, rooting is improved if a rooting hormone is used. The cuttings should have 2 - 3 pairs of leaves, plus one pair of buds at the base. Cuttings of young shoots in June or July. Layering, which takes about 12 months, is successful with most species in this genus. When large enough to handle, prick the seedlings out into individual pots and grow them on until they are 20cm or more tall before planting them out in their permanent positions. If the seed is harvested too soon it will produce very weak plants or no plants at all. The seed can be harvested "green" (when it has fully developed but before it has dried and produced any germination inhibitors) and sown immediately. Pre-soak stored seed for 24 hours and then stratify for 2 - 4 months at 1 - 8☌. The seed is best sown as soon as it is ripe in a cold frame, it usually germinates in the following spring. Propagation of the herb: Seed of garden origin rarely comes true to type. The leaves contain the dyestuff quercetin. Black, blue and brown dyes are obtained from the dried leaves. Other uses of Amur Maple: The leaves are packed around apples, rootcrops etc to help preserve them. Habitat of the herb: Found in many habitats in Korea, especially along streamsides and swampy places.
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