Betula nigra (River Birch) Seeds
Zone 4 to 9.
Native to North America.
The River birch found in the eastern United States growing in low elevation areas and as its name suggests along streams and rivers. Common even to the southern states it is more heat tolerant and a better choice than other birches that can be short lived in a hotter climate. The tree does best in full sun to partial shade and prefers moist, fertile, acidic soil. Tolerates wet soil. Bark is reddish brown and exfoliating. An attractive tree in the landscape as a single specimen or in groups.
Size: Height 40 to 70 ft; Width 40 to 60 ft.
Stratification: Seeds require about 60 days cold stratification at 3° C (37° F) to 5° C (41° F).
When sowing seeds cover lightly since they need some light to germinate.