Hazel alder is a large shrub or small tree in the birch family, with smooth gray bark and finely toothed leaves. It often grows in dense thickets along streams and in wet soils.
Habitat and range
In Maryland, hazel alder is common along streams, in wet woods, and in shrub swamps. It tolerates flooding and helps stabilize streambanks while fixing nitrogen in the soil.
Uses and significance
The dense growth provides cover for wildlife and helps filter runoff. Catkins provide early spring food for birds, and the roots help prevent erosion along waterways.