Dahurian Birch - Betula davurica [1]
Native to Manchuria, Northern China and Korea.
[Family Betulaceae - Alders, Birches, Hornbeams]  [Trees Table of Contents]
  Dahurian Birch Foliage
These are autumn colors on October 19th.

Native to Northern China, Korea, and Japan, Dahurian Birch is hardy to zone 5. Grows to 60' tall, deciduous, forms a rounded canopy with spreading branches and single or multiple trunks. Casts light shade. Dark green leaves 2" to 4" long, Very showy and interesting bark, similar to B. nigra bark. A good lawn tree that is easy to grow.

Dahurian Birch is resistent to Birch leafminer (Fenusa pusilla), a small sawfly whose larvae feed on tissue between the upper an lower leaf surfaces. Birches attacked by this insect may show no symptoms of decline for years after being attacked, but repeated leaf loss year after year can be fatal. [2]

Dahurian Birch Habit

The birches have long been popular ornamental trees in America, chiefly in the northern United States and Canada. Several are native Americans, but many species have been introduced from Europe and Asia. In general, they are graceful trees, the most popular being those with white bark on trunks and larger branches. Some of the others are very serviceable, either because they will grow well in wet soil or because they will exist as well as any other trees, or better, in dry, poor soils.

 

Dahurian Birch Habit
Dahurian Birch in Autumn colors. Morton Arboretum acc. 369-94*6

Dahurian Birch Bark
Outstanding exfoliating bark

Animals dependant on Birch
  • Moose: Important browse throughout most of range. Nutritional quality is poor in winter, but is important to wintering moose because of its sheer abundance in young stands.
  • White-tailed Deer: though considered a "secondary-choice food", it is an important dietary component. In Minnesota, white-tailed deer eat considerable amounts of birch leaves in the fall.
  • Snowshoe hare browse birch seedlings and saplings.
  • Porcupines feed on the inner bark
  • Beaver also eat it though generally prefer aspen, while willow and paper birch are second choice foods.
  • Voles and shrews eat the seeds.
  • Numerous birds and small mammals eat paper birch buds, catkins and seeds.
  • Young paper birch stands provide prime deer and moose cover.

Birds:

  • Numerous cavity-nesting birds nest in birch, including woodpeckers, chickadees, nuthatches, and swallows.
  • A favorite feeding tree of yellow-bellied sapsuckers, which peck holes in the bark to feed on the sap. Hummingbirds and red squirrels also feed at sap wells in paper birch created by sapsuckers.
  • Ruffed grouse eat the catkins and buds.
  • Redpolls, siskins, and chickadees obtain a considerable portion of their annual diet from birch seeds
References
  1. Dahurian Birch, Morton Arboretum accessions 148-84*1, 3 and 369-94*6 photographed during 2009 by Bruce Marlin
  2. Penn State Woody Ornamental Integrated Pest Management, "Birch Leafminer Fact Sheet"

[Family Betulaceae - Alders, Birches, Hornbeams]  [Trees Table of Contents]

 

              
 
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