Crabapples and Autumn Qualities
Ornamental crabapple trees make top-notch landscape trees.
Sep 22, 2006
It is important to remember that no single crabapple species or cultivar is suited for all sites and designs despite current crabapple breeding and selection research programs. The eighteen cultivars in the UMass Memorial Garden consistently grow well and appealingly here in western MA. In the orchard setting, cultural practices are rigorously kept up.
- Trickle irrigation
- Environmentally friendly pest-management spray schedules
- Regular pruning
There are 18 cultivars (cultivated varieties) in the Tribute Garden at UMass' Cold Spring Orchard for Research and Education. Each of these possesses special assets that show off nicely in autumn and winter. Here is a selection of a half-dozen of my favorites in this garden, which highlight these autumn features:
- 'Red Baron' ('Red Barron') is about 20' by 12' (slightly columnar) in its prime, but is, when mature, as wide as tall. This is one of the best crabapples for fall leaf color. The fruit is glossy dark red and about ½" across. It is slightly susceptible to rust and fireblight; vulnerability to scab is uncertain.
- 'Snowdrift', a vigorous grower, has a heavily textured rounded pattern with glossy, dark green foliage. It stands, at maturity, roughly 15' to 20' by 15' to 20'. In addition, this crabapple needs little pruning to reach this shape and maintain it. The fruit is orange-red and about 3/8" in diameter. Unfortunately, this striking tree shows a slight to moderate weakness to scab, and most tests show severe susceptibility to fireblight.
- 'Prairiefire' is upright when young with an irregular, untidy, and open pattern. Its pattern becomes rounded as the tree ages; mature size is about 20' high and 20' wide. Tree bark is a stunning glossy dark red-brown with many prominent lenticels. Fruit is a deep red-purple, 3/8 to ½" in diameter, somewhat cone-shaped, and persistent. Birds do not seem to like them.
- 'Sargent' is named for Charles Sprague Sargent (1841-1927), the first director of the Arnold Arboretum (Boston, MA) and a well-known plant explorer. This crabapple is a good choice for modern landscapes on small pieces of land because of its mounded shape, dense branching, low height of 6 to 8' and a spread one-half to twice its height. Fruit is bright red, about 1/3 to ½" in diameter, and a favorite of birds. This cultivar apparently fares well in southern growing zones down to 7b (temperatures usually do not fall below 0°F).
- 'Donald Wyman', named after the late Dr. Donald Wyman, Horticulturist at the Arnold Arboretum, is essentially one of the best ornamental crabapples. Here is another cultivar that grows well in the southern U.S. down to growing zone 7. Aside from a slight susceptibility to scab and powdery mildew, it is problem free. Fruit is glossy bright red, ½" in diameter and persistent into the winter. The biggest problem is having space into which to plant this tree because it possesses a large spreading form - 20' high and 25' wide at maturity.
- 'Louisa' was selected and introduced by Polly Hill, a Martha's Vineyard (MA) plants-woman, and named for her daughter. This crabapple is a short - 15' tall and 15' wide - weeper. It is susceptible to scab, but fares excellently against other pests and insects. The fruit persists into the winter and is yellow-colored shading to amber with a slight rose blush. Magnificent!
If you want to know more about ornamental crabapple identification and using these trees in landscape designs, especially residential settings, I heartily recommend the following:
- Fiala, John L. Malus: The Genus Malus (Hardcover),Timber Press, December 15, 1994. and
- Wyman, Donald 1990. Trees for American gardens: The definitive guide to identification and cultivation. Macmillan, New York, NY, First Edition, 1st printing 1951.
You may also enjoy my article Crabapples in the Landscape and my blog with a complete listing of the eighteen trees at A Crabapple Planting.
©Text and photograph by Georgene A. Bramlage, September 22, 2006. Reproduction without permission prohibited.
