Origin : North America. Habitat: it supports mediocre soils Hardiness: Betula papyrifera is very hardy. It supports very severe cold (-60°C or -76 °F). Shape: It often grows in clump (several trunks at the base).
Smooth bark shedding in broad small strips horizontally. It is white, silvery pink reflection on the outside, gold on the inside.. Uses: the bark of the Paper birch was used by the Indians, as paper and for the roofing of building, and for making boats. The wood contains a resin which allows the green wood to burn.
"In early summer, was recovered the bark of large trees, one piece, which was then rolled and carried back to camp. A man and a woman had to work for two weeks without stopping to build an ordinary canoe. The bark was held and flatten on the ground. We then placed a wooden frame, which matches the shape of the canoe, the bark so that we can give shape to the hull. We had to steam them floors and bow or dip them in order to give them the desired curve, and allowed to dry. .." Maintenance pruning: birches do not require pruning. Their branches are not dense and let through light in the middle of the branches.
Female catkin which
decomposes into small seeds.
bigger leaf than to the European birches.
River Birch, Betula nigra
Origin : North America Habitat: in sunny or half shade position. Shape: It often grows in clump. Height: 30 m tall. Quick growth.
Brown bark which darkens as it matures and clears bright orange zones when it peels off.
Sweet Birch, Black Birch, Cherry Birch, Betula lenta
Medium-sized tree reaching 20 m tall with a trunk up to 60 cm diameter.
Similar bark to that of the wild cherry tree, rough, dark blackish-brown, cracking into irregular scaly plates.
The twigs, when scraped, have a strong scent of oil of wintergreen.
The leaves are alternate, ovate, 5-10 cm long and 4-8 cm broad, with a finely serrated margin, , and resemble those of charm.
The flowers are wind-pollinated catkins 3-6 cm long, the male catkins pendulous, the female catkins erect.
The fruit, maturing in fall, is composed of numerous tiny winged seeds packed between the catkin bracts.