This birch is so named because of its natural association or occurrence near montane streams, lakes and moist glens. Water birch is a deciduous large shrub with a wide-spreading habit. It's native to the cooler mid-elevations of western North America, sporadically from central Alaska to Hudson Bay south to California and Arizona. The smooth bark is reddish brown to dark bronze with light colored lenticel dots. With age the bark is drab bleached gray.
The satin-glossy green leaves are broad ovals, sometimes resembling rhombuses. Leaf edges are sharply toothed, even doubly toothed. In mid- to late spring, flowering occurs. Male catkins are long, while the female catkins are less showy and rounded. Wind pollination results in production of winged nutlets by the female flowers. When they ripen in late summer, the catkins shatter to release seeds. Fall foliage color ranges from light to medium yellow.
Grow water birch in abundant sunshine in average to wet soils. Although normally associated with neutral to alkaline soils, it tolerates acidity. Loam and sandy soils that are moist to seasonally flooded work especially well. Use water birch to create a natural buffer or river bank stabilizer. Although not magnificent as a specimen, the fall foliage and bark makes it a worthy addition to a mixed shrub border. (info source: Learn2Grow.com)
Genus - Betula
Species - Fontinalis
Common name - Water Birch
Pre-Treatment - Required
Hardiness zones - 4 - 7
Height - 12'-20' / 4 - 6(15) m
Spread - 15'-30' / 4 - 9(15) m
Plant type - Shrub
Vegetation type - Deciduous
Exposure - Full Sun, Partial Shade
Growth rate - Medium
Soil PH - Neutral, alkaline
Soil type - Clay, Loam, Sand, Well Drained
Water requirements - Average Water
Landscape uses - Screening / Wind Break, Shade Trees
Germination rate - 79%
Bloom season - Early Spring
Leaf / Flower color - Green / Light yellow