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Message: <blockquote data-quote="guywhofishes" data-source="post: 251379" data-attributes="member: 337">Amur maple has <a href="https://www.mortonarb.org/trees-plants/tree-and-plant-advice/horticulture-care/invasive-trees-and-plants" target="_blank">invasive</a> traits that enable it to spread aggressively. This tree is under observation and may be listed on official invasive species lists in the near future. Review of risks should be undertaken before selecting this tree for planting sites. One tree can produce more than 5,000 two-winged seeds that are widely spread by wind. In open woods, Amur maple displaces native shrubs and understory trees. In prairies and open fields, it can shade out native species of plants, disrupting the ecosystems that plants and animals depend on.- - - Updated - - -Ecological Threat:<ul> <li data-xf-list-type="ul">It displaces native shrubs and understory trees in open woods, and shades out native grasses and herbaceous plants in savanna habitat.</li> <li data-xf-list-type="ul">A prolific seed producer, Amur maple is becoming invasive in the northern U.S. Extensive wild populations have been found in Illinois and Missouri. It resprouts easily from the cut stump.</li> <li data-xf-list-type="ul">Amur maple is a native of central and northern China, Manchuria and Japan, it was introduced to North America in the 1860s. It is still being frequently sold commercially as an ornamental, and for wildlife and shelterbelt plantings.</li> <li data-xf-list-type="ul">Amur maple is a MDA <a href="http://www.mda.state.mn.us/plants-insects/minnesota-noxious-weed-list" target="_blank">Specially Regulated Plant</a>  in Minnesota. Sellers must affix a label that advises buyers to only plant Amur maple and its cultivars in landscapes where the seedlings will be controlled by mowing and other means. Amur maple should be planted at least 100 yards from natural areas.</li> </ul></blockquote>

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