Size:
- Italian Alder (Alnus cordata) – 30-50 feet (9-15 meters) tall and 20-35 (6-10 meters) feet wide
- Black/Common Alder (Alnus glutinosa) – 60-80 feet (18-25 meters) tall and 20-35 feet (6-10 meters) wide
- Gray/Thinleaf Alder (Alnus incana) – 40-60 feet (12-18 meters) tall and 25-40 feet (7-12 meters) wide
- Seaside Alder (Alnus maritime) – 20-30 feet (6-9 meters) tall and wide
- Red Alder (Alnus rubra) – 40-60 feet (12-18 meters) tall and 25-40 feet (7-12 meters) wide
- Speckled Alder (Alnus rugosa) – 20-35 feet (6-11 meters) tall and wide
- Smooth Alder (Alnus serrulata) – 12-20 feet (3.5-6 meters) tall and wide
Roots: Fibrous (Smooth Alder (Alnus serrulata) has suckering roots)
Growth Rate: Fast to Very Fast
Oyster mushrooms growing on a downed Alder log.
Alder can also be innoculated with mushroom spawn to farm your own mushrooms.
