{"id":272,"date":"2025-09-25T19:32:58","date_gmt":"2025-09-25T23:32:58","guid":{"rendered":"https:\/\/www.clarku.edu\/hadwen-arboretum\/?p=272"},"modified":"2025-09-25T20:42:58","modified_gmt":"2025-09-26T00:42:58","slug":"norway-maple","status":"publish","type":"post","link":"https:\/\/www.clarku.edu\/hadwen-arboretum\/trees\/norway-maple\/","title":{"rendered":"Norway Maple"},"content":{"rendered":"\n<div class=\"wp-block-columns sidebar is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<h2 class=\"wp-block-heading\"><em><em><em><em><em><em><em><em><em><em>Acer platanoides<\/em><\/em><\/em><\/em><\/em><\/em><\/em><\/em><\/em><\/em><\/h2>\n\n\n\n<p class=\"is-style-intro\">Introduced to North America in the mid-1700s, the Norway maple is now considered an invasive species in New England, the Great Lakes, and the Pacific Northwest. It is thought that combined with rapid seed dispersal, the tree releases toxins into the soil that inhibit the growth of other plants.<\/p>\n\n\n\n<aside class=\"wp-block-group boxout has-light-green-background-color has-background is-content-justification-left is-layout-constrained wp-container-core-group-is-layout-12dd3699 wp-block-group-is-layout-constrained\">\n<h4 class=\"wp-block-heading\">Location<\/h4>\n\n\n\n<p>Due to their invasive nature, the arboretum now has over 160 Norway Maples. You\u2019ll see them as you walk along Appleton Road and as you travel North to the Larch Lane trail.<\/p>\n<\/aside>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"600\" src=\"https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/norway-maple-leaf.jpg\" alt=\"Norway Maple Tree leaves\" class=\"wp-image-274\" srcset=\"https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/norway-maple-leaf.jpg 900w, https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/norway-maple-leaf-300x200.jpg 300w, https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/norway-maple-leaf-768x512.jpg 768w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:4rem\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group alignfull section-intro has-light-warm-gray-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\">\n<div style=\"background-image:url(&apos;https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/norway-maple-tree.jpg&apos;);background-position:50% 50%;background-size:cover;\" class=\"wp-block-group padded lifted has-white-background-color has-background wp-container-content-69bc4bdf is-layout-constrained wp-block-group-is-layout-constrained\">\n<div style=\"height:25.625rem\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group padded has-charcoal-color has-text-color has-link-color wp-elements-9cc06f1fa5ce207dad23e98c05124d6b is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">History at Hadwen<\/h3>\n\n\n\n<p class=\"intro has-medium-font-size\">The striped red and sugar maples are documented on the Hadwen estate as early as 1882, but the Norway maple is not recorded until 1900 when Hadwen documented the Norway maple as one of the most prominent of his 20 varieties of maple trees. He writes that the maple family is one of \u201cgreat beauty, and its members are in the front rank of deciduous trees.\u201d He planted many along the streets and roads which gave an \u201cabundance of shade, and are the glory of the autumn.\u201d Little did he know that by the early 1900s, the plant would be identified as an invasive species.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group section is-layout-constrained wp-block-group-is-layout-constrained\"><div style=\"color:var(--clarku-color-green)\" class=\"eyebrow  has-text-align-left\">Keep learning<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Detailed species information<\/h3>\n\n\n\n<p>Norway maple is a species of maple in the family Sapindaceae native to eastern and central Europe as well as parts of Iran. It was introduced to North America in the mid-1700s and was a popular replacement for the American elm (Ulmus americana) following its decline due to Dutch elm disease in the 1950s and 60s. Since then, the Norway maple has become invasive in New England, the Midwest, and the Pacific Northwest.<\/p>\n\n\n\n<p>This large deciduous tree grows up to 65\u2013100 feet (20\u201330 meters) tall and up to 5 feet (1.5 meters) in diameter making it an ideal shade tree. The bark is grayish-brown and considerably smoother than other mature maples native to North America. The leaves are oppositely arranged with five lobes which each feature one to three jagged teeth on the lobe tips. In spring and summer, the leaves are green and fall leaves typically turn yellow or sometimes red or orange. When broken, the leaf releases a white, milk-like liquid not seen in other North American species of maple. The yellow, five-petal flowers emerge in early spring before the leaves and grow in clumps of 15 \u2013 30. The Norway maple typically produces a large volume of wind-dispersed seeds which are contained in the \u201cdouble samara\u201d characteristic of many maples. This high seed production is considered to be a key factor in the Norway maple\u2019s invasiveness in North America.<\/p>\n\n\n\n<p>Other factors likely contributing to the Norway maple\u2019s invasiveness are its ability to tolerate low light conditions and high germination rates. Further, the majority of Norway maples in North America are believed to be descending from specimens brought from Germany which has similar environmental conditions to areas where Norway Maple is invasive. Despite its widespread invasive status in North America, Norway maple continues to be widely used in landscaping in many urban areas due to the species\u2019 stress tolerance and rapid growth rate. Fortunately, education to spread awareness about the damaging effects of Norway maples is ongoing and the sale of the species is banned in some states, including Massachusetts.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Acer platanoides Introduced to North America in the mid-1700s, the Norway maple is now considered an invasive species in New England, the Great Lakes, and the Pacific Northwest. It is thought that combined with rapid seed dispersal, the tree releases toxins into the soil that inhibit the growth of other plants. Location Due to their [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":274,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[5],"tags":[],"class_list":["post-272","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trees"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Norway Maple | Hadwen Arboretum | Clark University<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.clarku.edu\/hadwen-arboretum\/trees\/norway-maple\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Norway Maple\" \/>\n<meta property=\"og:description\" content=\"Acer platanoides Introduced to North America in the mid-1700s, the Norway maple is now considered an invasive species in New England, the Great Lakes, and the Pacific Northwest. It is thought that combined with rapid seed dispersal, the tree releases toxins into the soil that inhibit the growth of other plants. Location Due to their [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.clarku.edu\/hadwen-arboretum\/trees\/norway-maple\/\" \/>\n<meta property=\"og:site_name\" content=\"Hadwen Arboretum\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ClarkUniversityWorcester\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-25T23:32:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-26T00:42:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/norway-maple-leaf.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"900\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@clarkuniversity\" \/>\n<meta name=\"twitter:site\" content=\"@clarkuniversity\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Carol D&#039;Onofrio\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.clarku.edu\\\/hadwen-arboretum\\\/trees\\\/norway-maple\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.clarku.edu\\\/hadwen-arboretum\\\/trees\\\/norway-maple\\\/\"},\"headline\":\"Norway 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