Betula pendula Tristis A weeping cultivar of the native silver birch, Betula pendula Tristis is a medium-sized to tall deciduous tree with a narrow crown, slender branches and gracefully drooping, twisting twigs. Average growth rate. The bark is white, peeling like the species; dark fissures develop as the tree ages. Long, brownish male catkins appear in mid-spring; the upright, female flowers release tiny winged seeds over winter. The leaves are small, delicate and heart-shaped, light green, turning yellow in autumn. Its grace and beauty are best appreciated when grown as a specimen in the larger garden; despite its weeping habit it retains a central leader, making it a perfect specimen tree. Particularly lovely when covered with frost in winter. Holds the RHS Award of Garden Merit. Site: Tolerates exposureSoil: Any reasonably well-drained soilPosition: Full sun or partial shadeSeason of Interest: Spring, summer, autumn, winterHardiness: Fully hardyHeight: 50ft (15m) Spread: 13ft (4m) after 20 years