Betula ermanii is a graceful medium-sized birch with peeling creamy bark on the trunk, delicately touched with copper-pink tones, and papery brown bark on the branches.
It is an extremely variable species and can be found in Northeast China, Korea, Japan, and Russian Far East (Kuril Islands, Sakhalin, Kamchatka).
Enjoying a stately and broadly conical habit, it bears large, coarsely toothed, heart-shaped, bright green leaves, which warm up to a wonderful golden-yellow in fall before they shed for the winter. In spring, tiny yellowish-brown male flowers appear in long catkins.
It is noted for its peeling bark, which can sometimes be removed in sheets, but usually shreds and hangs from the trunk and under branches. Yellow-brown male catkins appear with the leaves in spring.
Attractive in all seasons, but particularly brilliant in winter, this elegant birch tree will lift your garden, whether you grow it as a single or multi-stemmed specimen.
Information source: https://www.gardenia.net/plant/Betula-ermanii-Birch
Genus - Betula
Species - Ermanii
Common name - Ermans Birch
Pre-Treatment - Required
Plant type - Tree
Vegetation type - Deciduous
Hardiness zones - 4 - 8
Exposure - Full Sun, Partial Sun
Height - 15 - 20 (30) m
Spread - 10 m
Growth rate - Fast
Soil PH - Acidic, Neutral, Alkaline
Soil type - Clay, Loam, Sand, Well Drained
Water requirements - Average Water
Landscape uses - Specimen plant, borders, cottage and city gardens, foundation plantings
Seeds have an internal dormancy that can be overcome by a moist, chilling period. This treatment is called stratification. Here are the steps to stratify the seeds (start it from January till April):
1. Soak the seeds in water overnight
2. Place the seeds in a moist material such as milled sphagnum peat, sterile soil or vermiculite or coffe filter. Fully drain away all of the water and place the seeds in a zip-lock bag.
3. Refrigerate the seeds for 6-8 weeks at +2-+4C.
4. After the seeds are stratified, surface sow in a container filled with a moist, well-drained germination medium. Cover with glass or plastic and keep the container moist, but not soggy. Keep in room temperature, dark place.
As soon as the seeds germinate, place them under bright lights or move them to a greenhouse or cold frame.
You can sow seeds outdoors in well prepared beds in October or before the winter. Nature will do the job and will germinate in spring.
When large enough to handle, prick the seedlings out into individual pots and grow them on in a cold frame for their first winter.
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