The river birch is a large deciduous tree, growing 90 feet in height and spreading 30 to 50 feet. It grows at a medium to rapid rate, 30 to 40 feet over a 20-year period. It lives only 30 to 40 years on many urban sites, possibly due to a shortage of water. River birches situated in moist areas live longer.
Birch grows in climates ranging from boreal to humid and tolerates wide variations in precipitation. Its northern limit of growth is arctic Canada and Alaska, in boreal spruce woodlands, in mountain and sub alpine forests of the western United States, the Great Plains, and in coniferous - deciduous forests of the Northeast and Great Lakes states.
|Animals dependant on Birch|
Separate male and female flowers are borne on the same tree; the male in the form of a catkin, and the female in cone-like clusters that fall from the tree and are blown for long distances by the wind. In the fall, the foliage turns pale yellow.
The birches have long been popular ornamental trees in North America, chiefly in the northern United States and Canada. Several are native Americans, but many species have been introduced from Europe and Asia. Our specimens include river birch, Dahurian birch, paper birch, Arctic birch, Manchurian birch, Manchurian 10 other species.
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