Alnus hirsuta

Alnus hirsuta is a deciduous Tree growing to 18 m .
It is hardy to zone 3. It is in flower from March to April. The species is monoecious and is pollinated by Wind.
It can fix Nitrogen.
Suitable for: medium and heavy soils and can grow in heavy clay and nutritionally poor soils. Suitable pH: acid, neutral and basic soils. It can grow in semi-shade or no shade. It prefers moist or wet soil.