Grey Alder
Alnus incana
Last reviewed: June 2026
Light
part shade
Water
high
Size
180"–600" H × 180"–360" W
Bloom
Feb, Mar
Native to
AZ, CA, CO, CT and 27 more states
Pollinators
bees, beetles, moths
Browse plants for this ecoregion
Grey alder is a fast-growing deciduous tree that thrives in moist conditions and partial shade. It produces distinctive catkins in late winter to early spring and develops into a medium to large tree with attractive grey-green bark.
In an HOA neighborhood
Grey Alder takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Grows very large (15-50 feet)
- Requires consistently high water which may conflict with xeriscape preferences
- Fast growth can appear uncontrolled
Wildlife value
The early spring catkins provide crucial nectar for bees, beetles, and moths when few other food sources are available. The tree also supports various bird species and provides habitat for wildlife.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Grey Alder fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.