Red Alder (Alnus rubra)

Fast North American alder; thrives on moist soils; improves fertility through nitrogen fixation.

20–30 m

Average Height

Average mature height ranging from 10–30 metres, species dependent

80+ years

Lifespan

Typical lifespan 60–200 years, varying by species and conditions

Soil Type: Poor, infertile, wet soils
Soil Moisture: Moist to wet
Climate: Cool temperate
Altitude: All altitudes
Wildlife Value: Catkins feed insects/birds; fixes nitrogen; supports songbirds & swallowtails

Available in these regions only:

Varieties may differ within regions

Europe

Rest of world

Soil Type: Poor, infertile, wet soils
Soil Moisture: Moist to wet
Climate: Cool temperate
Altitude: All altitudes
Wildlife Value: Catkins feed insects/birds; fixes nitrogen; supports songbirds & swallowtails

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