Dura Heat River Birch (clump) Betula nigra - 10 Gallon Potted TreeDura Heat River Birch is valued for its stunning bark, with white, brown and tan colours all peeling from mature trunks. This variety is more heat tolerant than the species and has good fall colour. Dura Heat River Birch (clump) features subtle chartreuse catkins in early spring. It has emerald green foliage throughout the season. The pointy leaves turn an outstanding yellow in the fall. The fruit is not ornamentally significant. The peeling creamy