Norway Maple Acer platanoides. Once established, removal of the Norway maple is difficult. Leaves are oppositely arranged and have 5-7 lobes. […] It is a handsome species, spreading to make a satisfying rounded crown and sufficiently robust to be grown in exposed positions, even as a windbreak. Similar to many such plants, its invasive tendencies didn’t become noticed until much later. It has been widely planted in urban areas throughout much of the U.S. 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. USDA zones: 3B through 7 Custom Search Acer platanoides "Crimson King" ‘Crimson King’ Norway maple grows to a height of 50 feet spreading about 25 to 30 feet and is quite popular for its purple-green foliage throughout the summer. Norway maple can be distinguished from other maples by the milky sap exuded from the end of leafstalks when they are broken off. 'Crimson King' Norway maple grows to a height of 35 to 45 feet spreading about 25 to 30 feet and is quite popular for its purple-green foliage throughout the summer. Leaves are oppositely arranged and have 5 lobes. Norway maple is the most prevalent maple in Europe, occurring from Norway to Iran. 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. Use this dark purple tree in lieu of beech to create bold color effects in large landscapes. Today, it is the most commonly planted street tree in the U.S. The Crimson King maple tree, one of several Norway maple clones, is a medium-sized deciduous tree that grows between 40 to 50 feet. A stunning, dark-red tree with a leaf shape like its cousin the sugar maple. It is a medium-sized deciduous shade tree typically growing 40-50’ tall with a dense, symmetrical, rounded crown. 2019 Status in Maine: Widespread.Very Invasive. The Norway maple is found throughout all of Europe, and even stretches into Asia. Or the distinctive “Crimson King” Norway maple. The stems and branches release a white sap when broken. 'JFS-KW202') Heat… We will no longer be supporting IE7 and below as a web browser effective June 1st 2020. It has also been cultivated in many other areas, including Northwest of its native European range (such as in Tromsø, Norway) and in North America, where it is commonly grown for its shade and to line streets. Norway Maple is a small to medium sized deciduous tree in the Maple family. Sugar maple leaves tend to be longer than wide. Norway maples have invasive traits that enable them to spread aggressively. Crimson King Maples have an excellent dense maroon red foliage all summer. Invasive and Exotic Species. 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. The mature tree has a rounded crown of dense foliage . It spreads by prolific production of wind-borne, two-winged seeds. The Crimson King variety is normally a bit shorter. The best method of controlling Norway maple is preventing the spread of more. Click here for more information. The leaves are dark green, simple, opposite, 4”-7” wide with 5 lobes. The Parent, The Norway Maple – The Crimson King maple is not a separate species, but is a cultivar or variety of the species Acer plantanoides, the Norway maple. The tips of the points on the leaves are more rounded. The roots of the Norway maple tend to grow close to the ground surface taking away moisture for native plant species. Bloodgood Japanese maple can hit 25 feet or so, but don't hold your breath waiting for it to get that big. A: Invasive plants typically have few (if any) natural enemies and a very high reproductive rate. It looks beautiful with it's red-purple leaves against the red color of my house. Norway maple, Wikipedia, the free encyclopedia. I've always liked the tree. Cutting down the tree to the base of the trunk and spraying the trunk with a herbicide is required. Trees the self-proclaimed experts pronounce as bad tempt me more than the safe choices they proclaim as the best to plant. ✦ Scientific nomenclature: Acer platanoides ✦ Commonly known as: King Crimson or Norway maple ✦ USDA Zone: 3-7 ✦ Shape of the crown: Round and oval in shape. Crimson King is a beautiful tree, but requires discretion when planting because of its invasive characteristics. These and other characteristics allow invasive plants to out compete native plants, which can lead to the disruption of ecosystems. Acer platanoides, commonly called Norway maple, is native to Europe. The stems and branches release a clear sap when broken. Generally comprised of a single central trunk with short lateral branches. It was introduced into America in colonial times. The only thing I would add is that the Crimson King Norway maple is a tree that people do actually seek out at the nursery. Norway maple is a common urban tree in our watershed. It is easily established in open woodlands and fields. 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! Ontario's Invading Species Awareness Program. Trees can reach 40-60 feet tall, with a dense, rounded and symmetrical crown. Crimson King Maple (Acer platanoides 'Crimson King') Great choice for a large shade tree in front of a large home-site or to shelter a backyard. NVCA Administration Office 8195 8th Line Utopia ON L0M 1T0, Site Map |  and invasive plants. The popular “crimson” varieties have deep maroon leaves throughout the growing season. I have a crimson king, known by my family simply as "the crimson maple" growing in my front yard. "Crimson King' was selected in 1946 from a group of seedlings of Acer plantanoides 'Schwedleri'. Most varieties of Norway maple attain a height of 50 to 60 feet. If you are looking for tips on dealing with invasive species on your property, see the links above, or visit Its oval to rounded, dense crown fills with ornamental clusters of reddish-orange flowers in the spring, just as the leaves emerge. I have the same problem with plants. Design Ideas This dwarf, more narrow form of Norway Maple, much smaller than Crimson King, is perfect for narrow spaces and smaller gardens. Native Ecosystems. Aside from Crimson King Norway Maple, I don't know off-hand of any red/maroon/purple big trees. The Crimson King maple originates from Central and Eastern Europe and Southwest Asia. This is like the identity of the tree and sets it apart from other trees. Description: Extremely shade-tolerant, canopy-height tree, often planted.Cultivars include "Crimson King" which has purple-red color. ), Speak to your tree nursery for more suggestions. Feedback ​| Review of risks should be undertaken before selecting these trees for planting sites. Middle-aged ‘Crimson King’ Norway Maple. NVCA does not offer a service to remove invasive species on private property. © 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. Native to Europe, this tree was introduced in Philadelphia in 1792 as an ornamental street tree. Majestic, award-winner Acer platanoides 'Crimson King' (Norway Maple) is a vigorous medium-sized deciduous tree prized for its large, rich purplish-crimson leaves that last throughout the summer and its purple fruits. Best sized for boulevard and median plantings, public parks and institutional landscapes. Leaves: Opposite, 5-lobed with pointed tips but without other teeth.Broken petiole oozes white sap – distinguishes this species from native maples. A Crimson king will give you dense shade when mature. The Norway Maple – ‘Crimson King’ is a fast-growing tree, eventually quite large but easily pruned to confine its spread for many years. Mature bark have a small crisscrossing groove pattern. Truth is, even with the cards totally stacked against it by the author’s verdict, the Crimson is often a singularly magnificent tree. I have a sweet tooth, so I have trouble foregoing a toothsome delight even though I know I should. As winter ap… The Bugwood Network and USDA Forest Service. Norway maple is a large deciduous tree with a dense canopy. The Norway maple was introduced to northeastern North America between 1750 and 1760 as an ornamental shade tree. Introduced Species Summary Project: Norway maple (Acer platanoides). . Or the common privet. AND Crimson Sunset Maple (Acer truncatum x A. plat. Crimson King maple (Acer platanoides Crimson King) is one of the temptations I planted a few months ago. These medium-sized (up to 45 feet), showy trees are popular with home gardeners who want a shade tree that will provide spring, summer and fall color. Many have fine autumn colour, and some have ornamental stems Leaves and Stem Also, seedlings can create a thick mat in the shady forest understory and still establish since they are shade-tolerant. “Crimson King’ and ‘Globosum’ also have a significantly smaller canopy than the species. Leaves emerge bright crimson and deepen to … Its dense canopy limits understory herbaceous growth. Native to Europe, it was first introduced to North America for cultivation as an ornamental tree in 1756 1.The Norway Maple and many of its cultivars (such as the Crimson King Maple) have become popular choices for urban tree plantings due to their rapid growth and high tolerance of urban stressors. Leaves turn brown, dark maroon or bronze in the fall before dropping. ✦ Color and Shape of the leaves: This, in fact, makes all the difference. Seedlings first were introduced to this country by the famous nurseryman and explorer John Bartram in 1756. Crimson King maple (Matthieu Sontag/Wikipedia Commons) Imagine you are a tall, stately maple tree, with a stunning shape and head-turning color, and … The Norway Maple is considered an invasive species in North America. Other common names Norway maple 'Crimson King' . In late April, yellowish green flowers are produced in clusters. The oval to rounded crown fills with maroon-yellow flowers in … They are tolerant of many different growing environments and have been a popular tree to plant on lawns and along streets because of their hardiness. Genus Acer can be deciduous trees or large shrubs with paired, often palmately-lobed leaves and small flowers followed by characteristic winged fruits. Straight trunk with a well shaped crown. However, the Norway maple (Acer platanoides) is an invasive maple tree that overpowers other native plants and trees. PRE Evaluation Report -- Acer platanoides 'Crimson King' Evaluation Overview A PRE™ screener conducted a literature review for this plant (Acer platanoides 'Crimson King') in an effort to understand the invasive history, reproductive strategies, and the impact, if any, on the region's NVCA does not offer a service to remove invasive species on private property. Also, the seeds of Norway maple are flatter than seeds of sugar or red maple. Crimson King Norway MapleFamily Aceraceae. Q: Why are invasive plants a threat? You can find the leaves take the color purple to almost maroon, in most cases, during summer and autumn. Family Sapindaceae . Additionally, they are prolific seed producers and are now invading forests and forest edges. The Crimson King maple is a variety of the Norway maple (Acer platanoides). Once established, removal of the Norway maple is difficult. Plants like “burning bush,” famous for its red color. Nowadays varieties of the Norway maple are typically planted in urban areas because of their perceived aesthetics, tolerance to stress and rapid growth. Crimson King Maple Acer Platanoides. Columbia University. Naturalizes well into coniferous woodland settings. or call 705-424-1479 x 254, ​Copyright This is a cultivar of the Norway maple native to most of Europe and extending east to Turkey and Iran. 'Crimson King' - A very popular cultivar that many consider to be overused. It is a very large tree, at least 50 feet tall and has been growing since my father was a child. Hello, excellent article. Norway maple cultivars with lower germination, seed number and flower production may be worth investing in if the site is a stressful urban one. Disclaimer & Privacy, ​Phone: 705-424-1479 Fax: 705-424-2115 General inquiries email:, For media inquiries, please contact Maria Leung at The Norway maple is a native of Europe and the western parts of Asia. Norway maple leaves tend to be wider than long. Sugar Maple (similar looking native species). 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. Acer platanoides‘Crimson King’ Figure 1. Shade tolerant and an efficient user of water and nutrients, it can outcompete native sugar maple and beech. Display against blue or gold tinted evergreens. 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. Native to Europe, Norway Maple (Acer platanoides) was introduced North America because of its aesthetically pleasing landscaping look. The tree is characterized by a thick symmetrical crown and dense foliage that provides ample shade, and people often plant it in yards and parks. Use native or non-invasive tree species when landscaping on your property. Q: I have a Norway maple and burning bush plant as a part of my landscaping. Norway maples have very shallow roots and produce a great deal of shade which makes it difficult for grass and other plants to grow in the understory below. The tree is not native and was first introduced to the U.S. in 1756, marketed for its shade, hardiness, and adaptability to adverse conditions, according … There are a lot of threats to Maine forests — fragmentation, poor forestry practices, development, imported and native pests and diseases . The best method of controlling Norway maple is preventing the spread of more. Read more about Norway Maple on; Minnesota Department of Natural Resources, Invasive Species. Leaves typically turn yellow in the fall season, although there is a popular landscaping cultivar known as "Crimson King" that has a deep reddish purple fall foliage. These forms of Norway maple are good choices for street trees. As an invasive species in North America. Unlike the sugar maple, Norway maple leaves have a milky sap when broken, and their fall color is limited to yellow (except for the maroon-leaved varieties like Crimson King). The cultivars 'Crimson King' and Princeton Gold ='Prigold' have gained the Royal Horticultural Society's Award of Garden Merit. Leaves (to 7” across) have five sharply pointed lobes and resemble those of sugar maple. Although significant encroachment into natural areas have not been observed to date, there is a high potential that this will occur. Norway maple (Acer platanoides) is a large deciduous tree that can grow up to approximately 40-60 feet in height. 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. . Bald-Faced Hornet – Dolichovespula maculata, Family Apidae – Cuckoo, Carpenter, Digger, Bumble & Honey Bees, Family Sphecidae – Thread-Waisted Wasps, Mud Daubers, Superfamily Evanioidea – Aulacids, Ensigns, and Gasteruptids, Superfamily Ichneumonoidea – Braconids & Ichneumons, Symphyta – Sawflies, Horntails, & Wood Wasps, Auchenorrhyncha – Cicadas, hoppers & allies, Sternorrhyncha – Aphids, Scales, Mealybugs, Lycaenidae – Blues, Coppers, & Hairstreaks, Superfamily Pyraloidea – Pyralid and Snout Moths, Subfamily Arctiinae – Tiger and Lichen Moths, Cupressaceae – Redwood, Cypress, Arborvitae, Juniper, Hamamelidaceae – Witch Hazel, Sweet gum, Ironwood, Hippocastanaceae – Horse-Chestnuts & Buckeyes, North Carolina State University Cooperative Extension, Consumer Horticulture Acer griseum, USDA, ARS, National Genetic Resources Program.