Outstanding Features:
Good form for use as specimen or shade tree in landscapes. Clean dark green foliage.

Description:
Height: 40-60'
Width: 30-50'
Hardiness Zone: 4a

Norway Maple is an attractive landscape tree that is tolerant of urban conditions. It has a round to broad oval crown and is very dense. It has large, dark green five lobed leaves which remain in good condition throughout the growing season. The foliage remains green later than most other deciduous trees and may turn a clear yellow in the fall. Numerous showy clusters of bright greenish yellow flowers appear in the spring.

Requirements and Culture:
Requires full sun. Prefers a good, rich loam soil. More tolerant to drought, summer heat, and soil alkalinity than Sugar Maple. It has good midwinter cold hardiness. However, because of a tendency to harden slowly in the fall, young trees can suffer winter trunk injury in years with severe early winter cold.

Limitations:
No serious insect problems. Verticillium wilt can be a problem, especially in sites with compacted soil. Trunks of young trees frequently suffer sun-scald injury. Norway Maple casts dense shade and it is difficult to grow turf underneath low branching specimens.

Selected Cultivars:

`Cleveland' - a fast growing cultivar with a dense, symmetrical upright oval crown. `Columnare' - has a compact narrow columnar form with ascending branches.

`Crimson King' - noted for its purple foliage which is retained throughout the growing season. Slower growing than green leaved cultivars. Less cold hardy than some other cultivars..

`Crimson Sentry' - A bud sport of `Crimson King' that has a dense, narrow oval crown.

Crystal^TM - A new cultivar that has a straight central leader. Grows rapidly and branches well as a young tree.
`Deborah' - has reddish new foliage which turns bronze-green as it matures. It has a broad oval to rounded crown with a strong central leader.

Emerald Lustre^TM - selected by Bailey Nurseries for its vigorous growth and excellent branching habit as a young tree.

`Emerald Queen' - is an excellent cultivar with a straight trunk and good branching characteristics. Has an oval form.

`Globosum' - has a very dense globe shaped crown. Usually budded on a standard. The very dense, symmetrical form gives a very formal appearance. Of limited use in the informal landscape.

`Royal Red' - has reddish purple foliage throughout the growing season. Has a broad oval crown.

`Schwedleri' - has reddish purple new foliage turning dark green in summer. Has a broad oval crown. This is an old cultivar that is now being replaced by `Deborah' in landscape use.

`Superform' - has a very symmetrical broad oval to rounded crown.

Photo Credit: 1 E. Hasselkus; 2 MLA. Photo 1 is `Emerald Queen', 2 is `Crimson King'.

Photo Credit: 1 MLA; 2 E. Hasselkus. Photo 1 is `Cleveland'.

Minnesota Power | University of Minnesota | Northern States Power Company

---