![]() ![]() Norway Maple Bark - Photo by Paul Wray, Iowa State University Norway Maple Leaf - Photo by Paul Wray, Iowa State University The fruit is a samara two papery wings, each about 2 inches long, and maturing in the early autumn. The Norway maple has been planted throughout North America as an urban ornamental shade tree due to its high tolerance to urban pollution. The Norway maple will also hold its foliage for two weeks longer than native North American maples in autumn. Additionally, the leaves are a darker green, turning pale yellow in autumn. However, Norway maple has one definitive characteristic a milky sap is present when a petiole is broken. The leaves are very similar to sugar maple. The leaves are 5 to 7-lobed with irregular serrated margins, measuring 4 to 7 inches in both length and width, petioles are 3 to 4 inches in length. Seed Stratification: Prechill 2 months at 34☏ to 40☏ Site requirements vary with the species of maple. Site Requirements: Maple trees perform best in moist, well-drained soils. Height: Mature height varies with species. Tree canopies may be very dense or wide spreading. Mature Shape: Maples typically have a large, rounded crown. Slower growing maples have heavier, harder wood, making them less susceptible to branch and limb drop. Maples that are fast growing tend to have weak wood and may suffer from wind and ice damage. When selecting a maple tree, be sure to select a species suited for Iowa's winter. Most fall into zones 4 through 8, but some are less tolerant of cold or heat than others. It can reach heights of up to 100 feet, but is commonly seen at 40 to 60 feet, with a trunk diameter of 1 to 2 feet. A native to Europe, the Norway maple is a medium to large size tree. ![]()
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