Dura Heat River Birch offers beautiful creamy, white exfoliating bark at an early age. Fast-growing, nicely forked, and wind and ice resistant. ‘Dura Heat’ has a denser canopy of foliage than native River Birch along with leaf spot resistance. The tree is very intolerant to shade. Dura Heat prefers moist sites, but as it’s name implies, tolerates drier and hotter conditions better than most other river birch. It is an excellent specimen tree.