species
Alnus incana
Grey alder · Speckled alder
Photo: Kenneth Dritz. USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester, PA. Courtesy of USDA NRCS Wetland Science Institute. · Public domain · via Wikimedia Commons
Alnus incana belongs to the family Betulaceae, also known as Grey alder or Speckled alder, introduced to the UK. It reaches 20 m tall and 12 m across in about 30 years. It grows in part shade, where the ground is neutral and in well drained or moist conditions. Its RHS hardiness rating is H7 (very hardy): Below −20°C.
Assembled from the attributes recorded below.
What this plant needs
- Size at maturity
- 20 m tall × 12 m across, after about 30 years
- Hardiness
- H7 (RHS)
- Aspect
- Part shade
- Acidity
- Neutral
- Moisture
- Well drained, Moist
- In the UK
- Introduced
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