| Leaves:
Opposite; simple; 2" to 5" wide and long; deciduous; palmately
3- to 5-lobed; lobe margins entire or sometimes divided into additional
small lobes; bright green and glabrous above, paler with some fine
hairs beneath; fall color bright orange-red to red; petiole 1"
to 2" long, typically shorter than the leaf blade.
Twigs/buds: Twigs slender; glabrous; red. Terminal bud 1/16"
long; red; pointed.
Flowers/fruit: Flowers dioecious; yellow; no petals; small, inconspicuous;
appearing in spring. Fruit a samara; U-shaped, double-winged, wings
spread slightly, 1" long; green when mature in fall.
Bark: Gray-brown; shallowly furrowed.
Wood: Somewhat important locally where native; growth rings fairly
distinct; diffuse-porous; hard; dense; mainly used for firewood.
General: Native from southern Idaho south to Mexico and east to
Texas, including much of Utah in mountainous locations. This is
the common maple that gives Logan Canyon and some other northern
Utah locations their outstanding fall color. Withstands high soil
pH much better than many introduced maples. Intermediate shade tolerance.
Landscape Uses: This is a very good tree that should be used much
more in the landscape, especially now that a grafted cultivar is
available. It is tolerant of our soil and climatic conditions, and
even appears to withstand some drought when planted in the valleys.
Fall color is usually very good. Tree shape can be shrubby or tree-like
and size can be small to medium. I have seen this planted in Logan
both as an individual specimen and as small trees in a dense group
and both effects were appealing. Grafted trees planted at Red Butte
Garden and Arboretum in Salt Lake City have failed, indicating potential
graft compatibility or other problems. Zones 4(3?)-7.
|