Weeping Himalayan Birch A weeping form of the West Himalayan birch, Betula utilis Long Trunk is a small to medium-sized deciduous tree with the same brilliant white, peeling bark and a slender habit. Dark green, triangular leaves turn a warm yellow in autumn. The bark can be power-washed or scrubbed to keep it pristine. Particularly attractive planted beside a pond. When planting, insert a stake of the required eventual height, and remove only when you want the main stem to start drooping. Site: Tolerates exposureSoil: Any reasonably well-drained soilPosition: Full sun or partial shadeSeason of Interest: Spring, summer, autumn, winterHardiness: Fully hardyHeight: 16.5ft (5m) Spread: 8ft (2.5m) in 20 years