The Amur Maple is a coinage of maple aboriginal to northeasterly Asia from easternmost Mongolia east to Korea and Japan , and Second Earl of Guilford to the Russian Far East in the Amur River vale . It is a lowly maple with deciduous leaves that is sometimes produce as a garden matter or avenue tree diagram . It was first introduced to North America in the 1860s as an ornamental plant and for wildlife and shelterbelt plantings .

The Amur maple is generally a modest tree that grows up to 20 feet tall and all-inclusive . It features a dense , rounded crown and a legato , greyish - dark-brown bark that becomes scaly as it ages . In terms of growing pace , the Amur maple is believe to have a restrained to fast growth rate . On average , it can increase in height by 13 - 24 inches ( 33 - 61 cm ) per class .

The lifespan of Amur maple ranges from 20 to 30 years . However , with right care and turn consideration , it can live up to 50 years or more . The leaves of the Amur maple are bare , opposite , and palmate , with 3 - 5 lobes that are sharply pointed . They are typically bright green in outflow and summer , and turn into brilliant shade of red-faced , orange , or yellow in the downslope .

This shrub that raise beautiful flowers in the spring . These blossom are modest and seem in cluster , giving the tree a lovely , delicate appearance . The bloom are typically a pale yellow or light-green - yellow color , adding a subtle touch of colour to the landscape painting before the leaves fully emerge . The flowers are not as showy as those of some other flowering Sir Herbert Beerbohm Tree , but they are still a delicious heap in the spring .

The samaras of the Amur maple are diminished , winged germ that are characteristic of maple Sir Herbert Beerbohm Tree . They are typically about 3/4 to 1 inch long and are pinkish or red in color during the summertime , plough brown when they mature . These key fruit are distribute by the tip , assist by their winged structure , and can journey some length from the parent tree .

The Amur maple ( Acer ginnala ) is hardy in USDA zone 3 - 8 . This means it can thrive in regions where the modal one-year minimal wintertime temperature ranges from -40 ° F ( -40 ° C ) in Zone 3 to 20 ° F ( -6.7 ° C ) in Zone 8 . It is adaptable to a variety of soil types , include clay , loam , and backbone . It prefers well - drain soils but can suffer some drought once establish .

The Amur Maple displaces aboriginal shrubs and understory trees in open woods and shade out aboriginal Mary Jane and herbaceous plants in savanna home ground . It is also a MDA Specially Regulated Plant in Minnesota , with regulations in space to control its bed cover and encroachment on local ecosystems .

The Amur Maple is also considered an invasive species in some parting of the United States , particularly in the Northeast and Midwest . This is due to its prolific ejaculate yield and the ability of these seeds to sprout and spread in various habitats , include shaded areas .

Key Characteristics

Uses of Amur Maple

Pruning of Amur Maple ( Acer ginnala )

The best time to prune is during the wintertime months when the Sir Herbert Beerbohm Tree is dormant , or in the very other outpouring before it starts to leaf out . This time minimizes the risk of sap haemorrhage , which can occur if pruning is done in fountain when the tree is actively grow .

When crop , focus on removing dead , diseased , or damage branches first . This avail to keep the tree healthy and prevents the bed covering of disease . Next , you may crop to shape the tree as desired , whether that ’s to hold its rude rounded habit or to take it into a more formal configuration .

If you ’re crop to control the size of it of the tree , avoid cut back back more than 25 % of the tree ’s overall size of it in one twelvemonth . This can shock the Sir Herbert Beerbohm Tree and lead to poor health or even death . Instead , go around out major pruning over several geezerhood .

When making cuts , aim to cut just outside the branch neckband , which is the swollen orbit where the branch meets the proboscis or turgid offshoot . This help oneself the Sir Herbert Beerbohm Tree to heal more effectively .