Betula davurica (Dahurian Birch) is a deciduous tree native to Eastern Asia. It is a medium-sized tree that typically grows to a height of 30 to 50 feet (9 to 15 meters) with a spread of 20 to 30 feet (6 to 9 meters). It has an upright, oval to pyramidal shape when young, which becomes more rounded with age. The bark is smooth and brownish-gray, often developing distinctive horizontal lenticels.
Leaves: The leaves of the Dahurian Birch are simple and alternate. They are oval to triangular with serrated edges, measuring about 2 to 3 inches (5 to 8 centimeters) in length. The leaves are dark green on the upper surface and paler underneath, turning yellow in the fall.
Flowers: Dahurian Birch trees are monoecious, meaning they have separate male and female flowers on the same tree. The flowers appear in early spring before the leaves. The male flowers are long, yellow-brown catkins that hang down from the branches, while the female flowers are smaller and appear as upright clusters.
Fruit: After pollination, the female flowers develop into small, winged nutlets that are arranged in cone-like structures called strobiles. These nutlets are dispersed by wind during late summer or fall.
Habitat and Range: Dahurian Birch trees are native to Eastern Asia, specifically regions such as China, Mongolia, Korea, and Russia. They are adaptable and can grow in a variety of habitats, including forests, mountainsides, and river valleys.
Landscape Use: Dahurian Birch is commonly used in landscaping and as an ornamental tree due to its attractive bark, elegant form, and tolerance for various soil types. Its smooth, ornamental bark adds visual interest, and it can be planted as a specimen tree in gardens or used in group plantings for its aesthetic appeal.
Maintenance: Dahurian Birch trees are generally low-maintenance. They prefer well-drained soil but can tolerate a range of soil conditions. Regular watering is recommended during dry periods, especially for young trees. Pruning is usually not necessary, but dead or damaged branches can be removed as needed.