The Norway maple is a hardy tree that thrives much better than our domestic sugar maple in harsh urban conditions. The Norway Maple Swingle. The stems and branches release a clear sap when broken. Photographs: 30 photographs available, of which 5 are featured on this page. The stems and branches release a white sap when broken. Norway maple and burning bush, another highly invasive exotic, continue to be sold because banning them, nurseries complained, would cost them a lot of money. A suggested reason for the success of many invasive species is the absence of predators in the invaded habitat. Norway maple (Acer platanoides) was introduced as a shade tree in Philadelphia by John Bartram, a botanist and horticulturist who got the seeds from London in 1756.. Sugar Maple (similar looking native species). Many Norway maples made their way from Europe to the United States by being transplanted as ornamental specimens or by having individual seeds escape cultivation. USDA reports Norway maple as being hardy to a minimum temperature of -28 o F (Zone Norway Maple: Reassessing the threat to natural areas by John Ambrose. These species are called “invasive” due to their aggressive colonisation of new spaces. The tree that has the largest reputation as a pest species is the Norway Maple (acer platanoides). If you are looking for tips on dealing with invasive species on your property, see the links above, or visit Ontario's Invading Species Awareness Program. Green, purple, and variegated-leaf varieties are readily available from growers. Although significant encroachment into natural areas have not been observed to date, there is a high potential that this will occur. Columbia University. Norway maples are indigenous to Eastern Europe, but due to their prolific ways can now be found far beyond their original domain. In fact, according to the Brooklyn Botanic Garden, it’s the most-planted street tree in the U.S. Over time, as reforestation occurred across the Northeast, Norway maple joined native tree species as a component of eastern forest ecosystems. ²OÿÃgÛTòü)ýªq-öîÐÛÀ8Øíä9#¼.ÅFÏÿ #È endstream endobj 19 0 obj <>stream Description: Extremely shade-tolerant, canopy-height tree, often planted.Cultivars include "Crimson King" which has purple-red color. Norway maple This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Cutting down the tree to the base of the trunk and spraying the trunk with a herbicide is required. The European Norway maple has a similar leaf shape and often gets mistaken for the sugar maple. The tagged trees are Norway Maples, an invasive species in Canada. In 2016, students, faculty, and community volunteers participating in the first-ever Bioblitz at Dalhousie discovered the Norway Maples. These wildflowers rely on early season sunlight to build up enough reserves to carry them through the winter and flower the following spring. Norway Maple Acer platanoides. NVCA does not offer a service to remove invasive species on private property. These trees produce ample amounts of winged seed which are dispersed readily in the wind and germinate quickly. There are many invasive species of plants disrupting our ecosystems but one of them is putting our iconic sugar maple at risk - yes, the beautiful maple leaf that adorns our country's flag. It is a member of the family Sapindaceae Investigation of allelopathy in an invasive introduced tree species, Norway maple (Acer platanoides L. ) Details. It was routinely used as a replacement for elms felled by Dutch Elm Disease in the early 1900s. It has a rounded crown of dense foliage, and gray or brown bark that … It spreads by seeds into nearby disturbed forest communities, where its dense canopy reduces light levels and limits the growth of wildflowers and tree seedlings. That doesn’t mean they will die out on their own. Mature bark have a small crisscrossing groove pattern. Most recently, the Invasive Species Act was developed to help reduce the spread of invasive species. They also withstand poor growing conditions, including low-quality and compacted soils, and atmospheric pollution. © 2014-2020 NVCA - All Rights Reserved, Quick Reference Guide to Invasive Plant Species, The Landowner's Guide to Controlling Invasive Woodland Plants, Ontario's Invading Species Awareness Program. The Norway maple is invasive because “while native red maple or silver maple have to deal with specific insects and diseases that are pests, the Norway maple doesn’t, which means that it grows faster and creates more seeds than the native trees do, which means that they can’t compete,” said Todd Bolton, Takoma Park’s city arborist. Click here for more information. NVCA Administration Office 8195 8th Line Utopia ON L0M 1T0, Site Map | The mature tree has a … “The town is loaded with Norway Maples,” Jones said. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S. A study by Cincotta et al. Norway maple has been widely planted in the U.S. as an urban street tree. Nowadays varieties of the Norway maple are typically planted in urban areas because of their perceived aesthetics, tolerance to stress and rapid growth. NORWAY MAPLES INVASIVE TREES IN OHIO. Feedback | PLEASE DON'T PLANT NORWAY MAPLE TREES! While these trees have demonstrated invasive traits, there is insufficient supporting research to declare them so pervasive that they cannot be recommended for any planting sites. You may be familiar with the lobed shape of a maple leaf, but on closer inspection each of these seven species’ leaves look a little different. Norway maple is common throughout the U.S. and Canadian portions of the Great Lakes region. Norway maples grows rapidly and once established they create a thick canopy which block sunlight from the forest floor restricting growth of native shrubs and ground cover. Tree-of-heaven, Ailanthus altissima (P. Introduced Species Summary Project: Norway maple (Acer platanoides). Norway maple has been reported to be invasive throughout the northeastern U.S. from Maine to Wisconsin, south to Tennessee and Virginia and also in the Pacific Northwest. Norway maple is an invasive plant that has escaped from cultivation to displace sugar maple and shade to death spring wildflowers such as Dutchman’s breeches, dog … The Problem Norway maple is an invasive plant species in North America and is altering our woodlots (see Figures 1 and 2 showing the potential spread from roadsides and yard plantings into existing woodlots). Minnesota has six species of native maples, and some non-native species as well. The roots of the Norway maple tend to grow close to the ground surface taking away moisture for native plant species. Although these large, beautiful trees shouldn’t be cut down simply because they’ve been here so long —-they offer no sustenance. Native to Eurasia, it was … (2009) found that foliar insect and fungal damage was significantly higher on na… Leaves are oppositely arranged and have 5 lobes. There, with their own heavy canopies, they shade out native wildflowers. If you are looking for tips on dealing with invasive species on your property, see the links above, or visit This maple tolerates heavy shade, so establishes well in woodlands where birds drop their seeds. ... are moving this way. We will no longer be supporting IE7 and below as a web browser effective June 1st 2020. Toronto is one area where concern has been expressed for this species. Invasive. Norway maples are “not the ideal urban species we once thought they were,” Mr. Kuitenbrouwer said. Ontario's Invading Species Awareness Program. Read more about Norway Maple on TreeCanada.ca; Minnesota Department of Natural Resources, Invasive Species. Norway Maple (Acer platanoides) has been recognized as an occasional invasive exotic in various parts of eastern North America. Use native or non-invasive tree species when landscaping on your property. SCROLL DOWN FOR PHOTOGRAPHS. It was brought to North America in the mid-1700s as a shade tree. Invasive and Exotic Species. Some species are still actively introduced, such as Norway maple and Amur maple, which are both popular landscape trees due to their attractive foliage and their ability to … My neighbor and I both have invasive Norway Maple (Acer Platanoides) trees. It’s now a common street tree. Native to Europe, Norway Maple (Acer platanoides) was introduced North America because of its aesthetically pleasing landscaping look.Nowadays varieties of the Norway maple are typically planted in urban areas because of their perceived aesthetics, tolerance … Norway maples have invasive traits that enable them to spread aggressively. ... Norway maple, Acer platanoides. Þõ¢>;m'ClÂkß\òÒH;Ò RÇÖè4AÍiawö=èµ8¡í'éz With as popular as maple trees are, you may be wondering why they are considered a nuisance in Portland and so many other parts of the country. H|SíÓ@ü§µ!É]Ã ~'$@"ínÊkÀãMSõë@TK¶Çãoõ. Nationally, it is most frequently reported as invasive in New England and the Mid-Atlantic. Learn more about how you can stop the spread. Mill.) Sycamore maple, Acer pseudoplatanus. Good alternatives to Norway Maple include: Hackberry (adapted to a range of soil types and tolerates difficult urban conditions), Silver and Freeman maples (needs moist soils), Downy and smooth serviceberry (tolerates wide range of soils and produces edible berries during the summer! Norway Maple. They arrived in North America in the late 1700s and quickly gained popularity. The abbreviated ad hoc process strangely ignored the requirements of the State Environmental Quality Review Act, which requires a thorough analysis of both environmental and economic impacts. Once established, removal of the Norway maple is difficult. Leaf shape is useful to identify species including the non-native and invasive Norway maple. ), Speak to your tree nursery for more suggestions. The Bugwood Network and USDA Forest Service. Norway maple is an invasive plant you should not put in landscapes, and for which there are several good alternatives. As you know, the Norway maple species has become labeled as an invasive species in some parts of North America. Life cycle/information: Norway maple (Acer platanoides) is a broadleaf deciduous tree that grows up to 50+ feet in height and produces copious amounts of seeds and dense shade. Norway Maple Invasive Plant Information Sheet Acer platanoides Maple Family (Aceraceae) Description: Norway maple, a deciduous tree, reaches a height of 40-50 feet, occasionally exceeding 90 feet. Also, seedlings can create a thick mat in the shady forest understory and still establish since they are shade-tolerant. Based on the results of a study in a New Jersey natural area, there is concern that in forests managed for native vegetation, Norway Maple will reproduce more vigorously than the native Sugar Maple, and therefore, may out compete Sugar Maple and native, understory herbs and shrubs as well. They are prolific seed producers, and their thick foilage shades out most other species that try to grow under them. The best method of controlling Norway maple is preventing the spread of more. email@example.com or call 705-424-1479 x 254, Copyright As defined by the Invasive Species Advisory Council, an invasive species is a non-native species . Norway maples produce huge seed crops, much greater than sugar maples, and their seeds, carried by the wind, tend move into maple forests where they grow readily. Norway Maple is frequent in urban areas where it is planted as a street tree or invasive in vacant lots. Norway maple, Wikipedia, the free encyclopedia. 2019 Status in Maine: Widespread.Very Invasive. He introduced what he termed a friendly amendment, or a relatively simple change, to the article that would specify protections are for accepted trees but not invasives such as Norway Maples. Remember to refrain from planting any of the Norway maples on your property, which include the Crimson King, Emerald Queen, Drummondii, Dissectum, Columnare, and other varieties. Leaves: Opposite, 5-lobed with pointed tips but without other teeth.Broken petiole oozes white sap – distinguishes this species from native maples. European alder, Alnus glutinosa (L.) Gaertn. Their seeds are capable of germinating in deep shade, even more so than those of the sugar maple, although it too is … The leaves are dark green, simple, opposite, 4”-7” wide with 5 lobes. Norway maple is a common urban tree in our watershed. Norway maple is an invasive plant that has escaped from cultivation to displace sugar maple and shade to death spring wildflowers such as Dutchman’s breeches, dog-tooth violet, and mayapple. Norway maple has been planted extensively as an ornamental tree and is now found invading natural areas where it often outcompetes native sugar and red maples and other deciduous trees. Norway maple leaves tend to be wider than long. Disclaimer & Privacy, Phone: 705-424-1479 Fax: 705-424-2115 General inquiries email: firstname.lastname@example.org, For media inquiries, please contact Maria Leung at The difference is its leaves contain a toxic latex that harms insects and pollinators. Sugar maple leaves tend to be longer than wide. Posted on 11/09/2020 11/13/2020 by Queen Bee. Notes: Norway Maples are somewhat invasive alien trees. Acer platanoides, commonly known as the Norway maple, is a species of maple native to eastern and central Europe and western Asia, from France east to Russia, north to southern Scandinavia and southeast to northern Iran. It isn’t all species of maple, however, that are invasive and therefore not permitted. Native to Europe, Norway Maple (Acer platanoides) was introduced North America because of its aesthetically pleasing landscaping look. NVCA does not offer a service to remove invasive species on private property. Norway maple (Acer platanoides) provides breeding habitat for another highly invasive species, the Asian longhorned beetle (Anoplophora glabripennis), an insect that threatens to significantly reduce North American hardwood forest stands. Leaves are oppositely arranged and have 5-7 lobes. The tips of the points on the leaves are more rounded. About Norway Maple: An Invasive Plant in Maryland. But consider the havoc that invasive species in general – such as dog-strangling vines, garlic mustard plants and the Norway maple in particular – … There are some groups that feel it should be illegal to grow and plant Norway maples here in Ontario. Norway maples became very popular street and yard trees because they offer a great deal of color variation. Review of risks should be undertaken before selecting these trees for planting sites. In late April, yellowish green flowers are produced in clusters. On a walk between the Dunn parking lot and the Henry Hicks Building, you may notice red tape on many of the trees in the area. Norway Maples – An Invasive Nightmare.
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