Betula nigra
River birchCulture: River birch transplants best in the spring. It is adapted to moist soils but will grow in drier soils. Chlorosis will develop in high pH or very dry soils. Do not prune birches in the spring because pruning cuts will "bleed" sap and be slow to heel. Birches grow fast and 2 to 3' increases per year are not uncommon when they are young. This species is reasonably pest free and is resistant to the bronze birch borer; although aphids can be a nuisance. Usage: River Birch is an excellent choice for large landscapes. It looks best when grown multi-stemmed. The young exfoliating bark on river birch is very attractive and the tree should be used as a specimen to highlight its outstanding characteristics. This tree is not as popular as the white barked birches but its use is increasing. |
