Herb: River Birch
Latin name: Betula nigra
Family: Betulaceae (Birch Family)
Medicinal use of River Birch:A salve was made by boiling the buds until they were thick and pasty, sulphur was added and this was then applied externally to skin sores and ringworm. The leaves have been chewed, or used as an infusion, in the treatment of dysentery. An infusion of the bark has been used to treat stomach problems, "milky" urine and difficult urination with discharge.
Description of the plant:
Habitat of the herb:Banks of streams, by swamps etc, in deep rich soil that is often inundated for weeks at a time.
Edible parts of River Birch:Sap - raw or cooked. A sweet flavour. Harvested in early spring, before the leaves unfurl. The trunk is tapped by drilling a hole about 6mm wide and about 4cm deep. The sap flows best on warm sunny days following a hard frost. It makes a refreshing drink and can also be concentrated into a syrup or sugar. The sap can be fermented to make birch beer or vinegar. 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.".
Other uses of the herb:Young branches are used to make besoms, whisks etc. This species has an extensive root system and is sometimes planted for erosion control along the banks of streams. Wood - light, strong, close grained and hard, but it contains many knots because of the numerous branches along the trunk. It weighs 36lb per cubic foot. Of little use commercially, though it is sometimes used for furniture, turnery etc.
Propagation of River Birch:Seed - best sown as soon as it is ripe in a light position in a cold frame. Only just cover the seed and place the pot in a sunny position. Spring sown seed should be surface sown in a sunny position in a cold frame. If the germination is poor, raising the temperature by covering the seed with glass can help. 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.
Cultivation of the herb:Banks of streams, by swamps etc, in deep rich soil that is often inundated for weeks at a time.
Known hazards of Betula nigra:None known
Plant information taken from the Plants For A Future.