The tree species Sorbus americana is commonly known as the American mountain-ash. It is a deciduous perennial tree, native to eastern North America. The American mountain-ash and related species (most often the European mountain-ash, Sorbus aucuparia) are also referred to as rowan trees.Family: Rosaceae. Sorbus americana, called American mountain ash, is a small, deciduous, understory tree (sometimes a shrub) that is native to northeastern North America from Newfoundland to Manitoba south to northern Illinois, northern Michigan and New Jersey plus further south in the Appalachians to Georgia. It typically grows to 15-30’ tall with an open.
The American mountain ash (Sorbus americana), also known as mountain ash or roundwood, is a deciduous small to medium size tree, attaining a height of 30 feet (maximum 71 feet), and a trunk diameter of more than 1 foot. It does not grow rapidly and is considered a short-lived species. The leaves are alternate, pinnately compound, 6 to 10 inches long with lance-shaped leaflets. The American mountain ash is not well adapted to warmer climates and generally does not do well in areas with insufficient moisture. It is known to be slow growing and to prefer full exposure to the sun. In the wild the American mountain ash is usually short-lived due to mildew, fire bilght, excessive browsing, and disease carrying insects.
American Mountainash Sorbus americana. This small native tree's dark green leaves turn yellow, orange and reddish-purple in the fall. Showy white spring flowers are followed by large clusters of flame-red, berry-like fruit loved by birds. Mature Size The American mountainash grows to a height of 10–30' and a spread of around 15' at. SPECIES: Sorbus americana GENERAL BOTANICAL CHARACTERISTICS: American mountain-ash is a native, smooth-barked, deciduous shrub or small tree 10 to 30 feet (3-9 m) tall, with an average d.b.h. of 4 to 10 inches (10-25 cm).
It is easily mistaken for the related, and less common, American Mountain-ash (Sorbus americana), which has leaflets that are 3.3 times or more as long as wide (divide length by width to determine), typically hairless all over, and has somewhat smaller flowers and fruits (both to 1/3 inch). Sorbus americana (American Mountain-ash and much more common, Showy Mountain-ash (Sorbus decora), and it is highly likely that the 2 herbarium records on the county distribution map that are outside of the Arrowhead region are actually S. decora. It has leaflets that are less than 3.3 times as long as wide (divide length by width to.
Sorbus americana 'Red Cascade' Width Plant Bed: 20 Mature Height: Smoke Tree Cotinus coggygria Width Plant Bed: 5 Mature Height: 25 Mature Canopy: 20 Drought Tolerant: Sorbus scopulina Width Plant Bed: 5 Mature Height: 15 Mature Canopy: 15 Drought Tolerant: Wet Soil. Dense clusters of tiny white flowers mature to orange-red fruits in the fall. It is distinguished from its American cousin, American mountain-ash (Sorbus americana) by the long, bent (villous) hairs on the twigs, undersides of leaves, and bud scales. Birds relish the orange fruits in the fall.