Betula nigra, commonly called river birch, is a vigorous, fast-growing, medium-sized tree. We offer multi-trunk forms of this tree which consist of a more irregular crown and are generally considered to be the superior growth habit for this species. The salmon-cream to brownish bark exfoliates to reveal a creamy white inner bark that can be nearly as white as the white-barked birches Leathery, diamond-shaped, medium to dark green leaves (1.5-3.5" long) with doubly toothed margins turn yellow in fall. Fast Grower. Additional Information: Latin Name: Betula nigra 'Heritage Cully' Plant Type: Tree Shrub Type: Deciduous Exposure: Full Sun Deer Resistant: Yes Mature Height: 30-50 Feet Mature Width: 20-30 Feet Recommended Space: 8-15 Ft apart Growth Rate: Fast Hardiness Zone: Zone 3-7 Habit: Pyramidal Water Needs: Water Regularly to maintain wet or evenly moist soil Maintenance: Easy Pruning Time: Additional attribute: Attractive Textured Bark Bird Friendly Fall Color Native to North America Landscape Uses: Coastal Exposure, Erosion Control, Firescaping/Fire Wise, Specimen, Very Wet Areas, Windbreak, Woodland Garden