Red Alder

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Alnus rubra Type: Tree · Family: Betulaceae · Native Region: Pacific Northwest Growing Conditions Sun: Sun to Part Shade Water: Wet to Medium Bloom Time: March Mature Size: 30–30 f t tall, 30–30 ft wide Attributes Attracts Pollinators Attracts Birds Fire Resistant Landscape Use Food Forest, Woodland Garden, Rain Garden Ecological Notes Ecological function: Habiata, attracts wildlife, nitrogen fixer Source: Bloomsday Natives availability list (Dec 2025) Learn More USDA Plants Profile · GBIF Species Data · Oregon Flora Show more