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White Alder | Alnus rhombifolia

A tall tree with green leaves against a partly cloudy sky.
Photo credit: Keir Morse
May contain: land, nature, outdoors, plant, vegetation, swamp, water, tree, root, and woodland
Photo Credit: Seven Oaks Native Nursery
May contain: plant, vegetation, tree, food, fruit, produce, and leaf
Close-up of glossy, green leaves on a branch with a blurred background.
Photo credit: Keir Morse
A tall tree with green leaves against a partly cloudy sky.
May contain: land, nature, outdoors, plant, vegetation, swamp, water, tree, root, and woodland
May contain: plant, vegetation, tree, food, fruit, produce, and leaf
Close-up of glossy, green leaves on a branch with a blurred background.

Description

Tolerant of seasonal inundation and drought. Nitrogen fixing and cold hardy. Less common than red alder (Alnus rubra) in Oregon.

Plant Details

HabitatsRiparian Forests, Bottomland Forests
Habitat NotesExcellent shade and erosion control along streams
PhenologyFlowering February-May
Mature Height40-80’
Shade PreferenceFull sun, part shade
Soil ToleranceMoist soils
Special UsesAttracts birds; Provides wildlife forage, cover and food; Provides bank stabilization