About Smooth Alder
Smooth Alder is a native shrub. Flowers open from March into April. Mature plants stand 2 m–4 m tall. Draws bees and caterpillars (as a larval host) to the garden.
Smooth Alder
Alnus serrulata
Feeds the food chain
A larval host plant. The caterpillars it raises are the primary food source for baby songbirds.
