The white-barked European white birch—the tree that comes to mind when most people think of birches—has many relatives that resemble it in graceful habit, thin bark peeling in layers, and smallish, fine-toothed leaves that turn from green to glowing yellow in fall. After leaf drop, the delicate limb structure, handsome bark, and small conelike fruits provide a winter display.
All birches need a regular supply of moisture and nutrients; they are generally too greedy for lawns. Nor should they be planted on a patio or where cars will be parked beneath them, since they are all susceptible to aphids that drip honeydew. Bronze birch borer can be a problem in the northern Rocky Mountain states; leaf miners in the Pacific Northwest. Pruned established trees just to remove weak, damaged, or dead growth. To minimize sap bleed, prune in summer or early fall in mild-winter areas; where temperatures remain below freezing, wait until the end of January.
Native to stream banks and lowlands in eastern North America. Very fast growth in early years; eventually becomes a pyramidal tree 50–90 ft. tall, 40–60 ft. wide. Trunk often forks near ground, but the tree can be trained to a single stem. Young bark is pinkish, very smooth, and shiny; on older trees, bark flakes and curls in cinnamon brown to blackish sheets. Diamond-shaped leaves are 1–3 in. long, bright glossy green above with silvery undersides. This is the most trouble-free birch.Betula occidentalis
Native to stream banks from Alaska to Oregon, east to Colorado. Shrubby; usually grows 12–15 ft. tall and wide. Smooth, shiny, cinnamon brown bark. Ovate leaves 2 in. long.
Native to the northern part of North America. Similar to Betula pendula but larger growing (to 50–90 ft. tall, half as wide), with 4-in.-long leaves that are less densely borne; habit is more open, less weeping. More resistant to borer, leaf miners. Creamy white bark peels off in papery layers.
Native from Europe to Asia Minor, this birch has a delicate, lacy appearance, with upright main branches and weeping side branches. An average mature tree is 30–40 ft. tall, spreading to half its height. Bark on twigs and young branches is golden brown; as trees mature, bark on trunk and main limbs becomes white, marked with black clefts. Oldest bark (at base of tree) is blackish gray. Glossy, rich green leaves to 2 1/2 in. long are diamond shaped, with a slender, tapered point. Often sold as weeping birch, although trees vary somewhat in habit, and young trees show little inclination to weep. Very prone to borer attack.Betula utilis jacquemontii
Native to northern India. Tall, narrow tree with brilliant white bark. Grows about 2 ft. a year to 40 ft., then more slowly to an eventual 60 ft. tall, 30 ft. wide. Seedlings vary in bark color from white to pinkish tan; for guaranteed white bark, look for grafted trees. Some borer resistance.
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