Common Name: Norway maple
Type: Tree
Family: Sapindaceae
Zone: 3 to 7
Height: 40.00 to 50.00 feet
Spread: 30.00 to 50.00 feet
Bloom Time: March to April
Bloom Description: Yellow
Sun: Full sun to part shade
Water: Medium
Maintenance: Low
Suggested Use: Shade Tree, Street Tree
Flower: Insignificant
Tolerate: Drought, Air Pollution
Culture
Easily grown in average, medium moisture, well-drained soil in full sun to part shade. Best in full sun. Tolerant of a wide range of soils. Tolerant of heat and drought. Generally tolerant of many urban pollutants. Freely reseeds. Trees have escaped cultivation and naturalized in many areas of the northeastern and upper midwestern U.S. Shallow root system.
Noteworthy Characteristics
Acer platanoides, commonly called Norway maple, is native to Europe. It has been widely planted in urban areas throughout much of the U.S. It is a medium-sized deciduous shade tree typically growing 40-50’ tall with a dense, symmetrical, rounded crown. Leaves (to 7” across) have five sharply pointed lobes and resemble those of sugar maple. Leaf stems exude a milky sap when cut. Fall color is usually an unremarkable yellow. Small yellow flowers in erect clusters (corymbs) appear in spring before the foliage. Flowers give way to paired seeds with horizontally spreading wings (samaras to 2” long).
Genus name is the Latin name for a maple tree.
Specific epithet means resembling platanus (sycamore), which is somewhat curious since the leaves of Norway maple do not really bear that much resemblance to sycamores.
‘Superform’ is a cultivar noted for its straight trunk, symmetrical shape with uniform branching, heavy foliage and excellent broad-rounded form. Better yellow fall color than what is normally seen on species plants. Introduced into commerce 1964 by Milton Nursery located in Milton-Freewater, Oregon under cultivar name of ‘Miller’s Superform’. Cultivar name was changed to ‘Superform’ in 1969 when J. Frank Schmidt & Sons took over the Milton Nursery.
Problems
Susceptible to verticillium wilt which is usually fatal. Shallow root system can crack or heave nearby driveways or sidewalks. Shallow surface roots can interfere with turf. Bark is susceptible to sunscald and cracking (frost cracks) in winter, particularly on younger trees. The thick canopy of leaves and shallow roots severely limits what can be grown within the drip line of the tree.
Uses
Shade tree. Although once widely planted as a street tree, this use is not generally recommended in many areas now.