Betula kenaica
| Betula kenaica | |
| Light: |   |
| Moisture: |  |
| Hardiness: | 2 |
| Soil pH: | 5.6-8.4 |
| Height: | 39' |
| Speed: | Fast |
| Open Woods Forest | |
| Native to: | |
| Edible Rating: |  |
| Medicinal Rating: |  |
| Tea: | Yes |
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Betula kenaica (common name: kenai birch)
Propagation: Seed - best sown as soon as it is ripe in a light position in a cold frame[1][2][3][4]. Only just cover the seed and place the pot in a sunny position[1][2][4]. Spring sown seed should be surface sown in a sunny position in a cold frame[3][4]. If the germination is poor, raising the temperature by covering the seed with glass can help[4]. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in a cold frame for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
If you have sufficient seed, it can be sown in an outdoor seedbed, either as soon as it is ripe or in the early spring - do not cover the spring sown seed. Grow the plants on in the seedbed for 2 years before planting them out into their permanent positions in the winter[1][2][3][4].
Cultivation: Succeeds in a well-drained loamy soil in a sunny position[5][6]. Tolerates most soils including poor soils and heavy clays[6]. Fairly wind tolerant[6].
A fast-growing but short-lived species[6]. Hybridizes freely with other members of this genus[7].
A good plant to grow near the compost heap, aiding the fermentation process[8].
This plant is closely related to B. papyrifera, and possibly no more than a sub-species of that species[5][6].
Trees are notably susceptible to honey fungus[6].
Range: North-western N. America - Alaska.
Habitat: Grows along the coast[5]. Rocky slopes in the subalpine zone from sea level to 300 metres[9].
Edibility: Young leaves and catkins - raw[10].
The buds and twigs are used as a flavouring in stews[10].
Inner bark - raw or cooked. Best in spring[10]. Inner bark can be dried and ground into a powder and then used as a thickener in soups etc or added to flour when making bread, biscuits etc. Inner bark is generally only seen as a famine food, used when other forms of starch are not available or are in short supply[K].
Sap - raw or cooked[10]. It can be used as a refreshing drink, or can be concentrated by boiling to make a syrup[K]. It is tapped in late winter, the flow is best on sunny days following a heavy frost. The sap can be fermented into a beer. An old English recipe for the beer is as follows:-
"To every Gallon of Birch-water put a quart of Honey, well stirr'd together; then boil it almost an hour with a few Cloves, and a little Limon-peel, keeping it well scumm'd. When it is sufficiently boil'd, and become cold, add to it three or four Spoonfuls of good Ale to make it work...and when the Test begins to settle, bottle it up . . . it is gentle, and very harmless in operation within the body, and exceedingly sharpens the Appetite, being drunk ante pastum."[11].
Medicinal: The bark is antirheumatic, astringent, lithontripic, salve and sedative[10].
Usage: An infusion of the plant is used as a hair conditioner and dandruff treatment[10].
Wood - close-grained, light, strong, hard, tough[12]. It makes a good fuel[10], whilst the bark makes a good kindling[10].
Pollinators: Wind
Soil: Can grow in light, medium, and heavy soils.
Drainage: Prefers well drained soil.
Flower Type: Monoecious
Heavy Clay: Grows in heavy-clay soils.
Also Known As: B. papyrifera kenaica. (W.H.Evans.)Henry.
Links
References
- ↑ 1.0 1.1 1.2 Sheat, Wilfrid. Propagation of Trees, Shrubs and Conifers. St Martin, 1948.
- ↑ 2.0 2.1 2.2 McMillan-Browse, Philip. Hardy Woody Plants from Seed. Grower Books, 1985.
- ↑ 3.0 3.1 3.2 Dirr, Michael and Charles Heuser. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press, 1987.
- ↑ 4.0 4.1 4.2 4.3 4.4 Rice, Graham. Growing from Seed Volume 2. Thompson and Morgan, 1988.
- ↑ 5.0 5.1 5.2 Bean, William. Trees and Shrubs Hardy in Great Britain. Murray, 1981.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
- ↑ Tutin, Tom et al.. Flora Europaea. Cambridge University Press, 1964.
- ↑ Riotte, Louise. Carrots Love Tomatoes. Garden Way, 1978.
- ↑ Flora of North America.
- ↑ 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 Schofield, Janice. Discovering Wild Plants.
- ↑ Duke, James. Handbook of Energy Crops. 1983.
- ↑ Sargent, Charles. Manual of the Trees of North America. Dover, 1965.