Alnus rubra
Red Alder









Slender, pyramidal form. Red buds reveal red-green catkins in spring. Inner bark is orange-red. Green leaves are blue-green beneath. Hardy. Tolerates moist soils. Catkins are a source of pollen for bees in early to mid-spring. Fixes nitrogen in the soil, so good for improving soil conditions for other plants.
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10 Year Size
Family: Betulaceae, birch family, a family of mostly Northern Hemisphere deciduous trees and shrubs. Learn more about Betulaceae.
Genus: Alnus, alnus (Latin, noun), meaning 'alder'. Commonly known as alder, a genus of trees and shrubs. Learn more about Alnus.
Species: Alnus rubra, rubra (Latin, adjective), meaning 'red', in reference to the orange-red inner bark of this species. Learn more about Alnus rubra.
Common Name: Red Alder