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#Norway maple pdf#

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.

Wildlife Habitat Programs and ConsultationĪ native to Europe, the Norway maple is a medium to large size tree.

Water Quality and Conservation Practices.

#Norway maple pdf#

Return to the Table of Contents | Download a PDF of Plant Invaders of Mid-Atlantic Natural AreasĪnd questions about the website should be directed to the webmaster. Native maples like sugar maple ( Acer saccharum) and red maple ( Acer rubrum) would be good substitutes for this invasive tree. Seedlings can be pulled by hand and small to large trees can be cut to the ground, repeating as necessary to control any re-growth from sprouts (see Control Options). Distinguish Norway by milky white sap, broad leaves, hair-like leaf tips, samara wings straight out, yellow fall foliage.ĭon’t plant Norway maple. Look-alikes: other maples including sugar maple ( Acer saccharum) and red maple ( Acer rubrum).Spreads: to new areas by vegetative reproduction and seed.

Flowers, fruits and seeds: flowers in spring, bright yellow-green fruits mature during summer into paired winged “samaras” joined broadly at nearly 180° angle milky sap will ooze from cut veins or petiole.

Leaves: paired, deciduous, dark green, palmate (like a hand), broader across than from base to tip, marginal teeth with long hair-like tips.

in height with broadly-rounded crown bark is smooth at first but becomes black, ridged and furrowed with age milky sap.

Plant: broad deciduous tree up to 90 ft.

Although thought to have allelopathic properties (meaning that the plant releases toxins that inhibit or prevent the growth of other plants), research has not been able to confirm this. Once established, it creates a canopy of dense shade that prevents regeneration of native seedlings. Norway maple forms monotypic populations by displacing native trees, shrubs, and herbaceous understory plants. Over time, as reforestation occurred across the Northeast, Norway maple joined native tree species as a component of eastern forest ecosystems. from Maine to Wisconsin, south to Tennessee and Virginia and also in the Pacific Northwest. Norway maple has been reported to be invasive throughout the northeastern U.S. It was planted on farms and in towns for its shade, hardiness and adaptability to adverse conditions.

in 1756 and soon began offering it for sale.

John Bartram of Philadelphia first introduced Norway maple from England to the U.S. Jan Samanek, State Phytosanitary Administration Norway maple was introduced for use as an ornamental landscape plant.