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Outstanding Features:
Attractive smooth white bark, clear yellow
fall color.
Description:
Height: 40-70'
Width: 20-40'
Hardiness Zone: 2a
Paper Birch is noted for its thin, white
papery bark which is very noticeable and attractive. It has an upright
oval form and is often grown as a multi­trunked specimen.
Foliage develops a very nice yellow color in the fall. Paper Birch
is very common in native populations in the Great Lakes region from
Minnesota eastward. It is also native in scattered locations along
streams and gulleys in Nebraska and the Dakotas.
Requirements and Culture:
Paper Birch requires a well drained soil,
cool soil temperatures and ample moisture. Full sun. Does not perform
well in difficult sites. Grows best in climates with cool summer
temperatures. An organic mulch or ground cover planting will help
keep summer soil temperatures cooler. Fertilization and irrigation
to maintain the tree in vigorous condition will help prevent borer
infestation.
Limitations:
Susceptible to bronze birch borer, especially when grown in stressful
conditions. The borer can kill large branches or even the entire
tree. Also susceptible to birch leaf miner. Not tolerant of compacted
soils, drought, or areas with high soil or air temperatures.
Related Species and Selected Cultivars:
B. pendula - European White
Birch has a very clean white bark. Branches are fine and often quite
pendulous. Unfortunately this species and its cultivars are extremely
susceptible to the bronze birch borer.
B. platyphylla var. japonica `Whitespire'
- Whitespire Birch has a narrow pyramidal crown and excellent
white bark. Has good tolerance to high temperatures and does well
under a wide range of soil types. Introduced for its good resistance
to the bronze birch borer. Following the recent dry years, borer
problems have been reported. However until better cultivars become
available, it is still the best white barked birch to plant.
Photo Credit:
1 E. Hasselkus; 2 MLA.
Minnesota Power | University of Minnesota | Northern
States Power Company
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