Betula papyrifera – Canoe Birch, Paper Birch (northern North America)
Habit: Impressive, large tree, 18-25 (30) m tall, 10-15 (18) m wide; one stem or often several, deep, light, highly domed crown, twigs horizontal to upward-reaching, lightly overhanging near the ground; initially fast-growing, 50-80 cm a year, later 20-30 cm.
Flowers: Monoecious, yellowish catkins, before leaves shoot, April.
Bark: Shimmering cream-white from the 4th year on, peeling off in rings, varying in whitish to salmon hues.
Leaves: Triangular to ovoidly pointed; pale green, splendid yellow in autumn, mid to end of October.
Roots: Very far-reaching shallow root system, some directly under the surface, lifting pavements.
Demands: Sun; sensitive to heat, good in cool or cold areas, frost hardy, wind resistant.
Soil: Moderately dry to moist, acidic to slightly alkaline; all well-drained substrates with somewhat nutritional value.
Hardiness: Zone 4