Betula nigra Heritage, 15LThe river birch tree, Betula nigra Heritage is a fast growing, elegant tree, which can tolerate wet soil. The medium sized, deciduous tree bears yellow catkins in spring and serrated green leaves that darken during the season before turning pale yellow in autumn. The peeling bark is what makes this tree so interesting, starting pinky brown, the bark exfoliates, revealing a creamy bark within.