Betula populifolia aka White Birch

Betula populifolia, or gray birch, belongs to the birch family. This deciduous tree grows in eastern North America. Its range runs from southeastern Canada south to Virginia. Scattered stands reach west to Illinois. It colonizes old fields, burned ground, and cleared land. It also grows on poor sand and roadside cuts.

Garden trees reach 20–40 feet (6.1–12.2 metres) tall. Their spread reaches 10–20 feet (3–6.1 metres). Virginia Tech describes trees that seldom exceed 30 feet (9.1 metres). Growth is fast, but the tree has a short life. Several trunks often support a narrow, cone-shaped crown. Slender branches may droop, and trunks can lean. Young bark starts reddish brown, then turns pale and chalky. Dark triangles mark the trunk beneath each branch. The bark stays largely intact rather than peeling in sheets. Raised pores give the thin twigs a rough feel. Green leaves have triangular outlines, long tips, and double-toothed edges. They turn yellow in fall, though the display varies.

Male and female catkins grow on the same tree. Flowers open in March or April, depending on location. Male catkins look yellow-brown; female catkins look green. The fruit forms small cylinders that ripen in autumn. These release tiny nutlets with two wings through winter. The pale bark gives the tree value in winter gardens. It suits naturalized groups and can serve as a specimen. Birds and butterflies visit it, and deer tend to avoid it. Its wood has local uses for fuel, charcoal, and pulp.

Gray birch grows best where summers stay cool. Sources place it in USDA zones 3–6. Give it sun, though it accepts some shade. In warmer sites, afternoon shade helps protect it from heat. It accepts poor soil and both dry and wet sites. For garden growth, moist soil with good drainage suits it. Sandy or rocky loam works well. Avoid high-pH soils, which can cause chlorosis. Mulch helps keep its shallow roots cool and moist. It needs little pruning; avoid cuts during spring sap flow.

Leaf miners can spoil the foliage without killing the tree. Heat-stressed trees face greater danger from bronze birch borers. The species has some resistance, but borers can kill weakened trees. Aphids, skeletonizers, and dieback also occur. Ice and heavy snow can bend or break stems. People drink the sweet sap or ferment it. Cooked inner bark has served as emergency food. Birch tar can irritate skin; reported edible uses do not establish that all preparations are safe.