seaside alder
Alnus maritima
USDA zones4 to 7
SunHandles full sun to partial shade
WaterHandles moderate to wet soil
Size20 to 30 feet tall16 to 29 feet wide
- Growth rate
- Moderate
- Habit
- Shrub , tree
- Bloom season
- Summer, autumn
- Bloom color
- Yellow
- Foliage color
- Green.
- Soil types
- Loam, clay
Garden uses
Attracts
Notes
Seaside alder (Alnus maritima) is a tree for specimen planting, rain gardens, and naturalized areas. It is hardy to USDA zone 4, or down to -30°F (-34°C). This plant likes full sun to part shade and average to wet, loamy or clay soil. It can grow as a small tree with a straight trunk and narrow, rounded crown, or as a much-branched shrub. Yellow flowers open in autumn, and birds visit the tree.
Pairs well with River birch, Cardinal flower, and Big bluestem.
Native range
Delaware, Georgia, Maryland, and Oklahoma.