American mountain ash is a deciduous understory tree native to cool mountain regions of northeastern North America, from Newfoundland and Manitoba south through the Appalachians to Georgia. This hardy species grows 15 to 30 feet tall with an open, rounded crown, producing showy white flowers in spring followed by brilliant orange-red fruit that persists into fall. It thrives in hardiness zones 3 through 6, where it attracts birds and adds striking seasonal color to woodland gardens and landscapes that receive full sun and moderate moisture.
Full Sun
Moderate
3-6
360in H x 300in W
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Low
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Native to the cool highlands of eastern North America, this small tree delivers a two-season show: delicate white spring flowers give way to clusters of bright orange-red berries that light up autumn and feed migrating birds well into winter. The fine, compound leaves turn golden before dropping, and smooth gray bark adds textural interest even in dormancy. Its preference for moist, acidic soils and dislike of hot, humid summers makes it a natural choice for northern gardens and mountain properties where other ornamentals struggle.
American mountain ash functions primarily as an ornamental flowering tree and wildlife support species. The showy white spring blooms and bright orange-red fruit are its main landscape contributions, making it valuable in woodland gardens, native plant schemes, and properties designed to attract birds. The fruit, while edible, is not typically harvested for human consumption; instead, it serves as a natural food source for migratory and resident birds throughout fall and early winter.
No timeline data available yet for this variety.
Prune American mountain ash minimally and only as needed, ideally between late fall and early spring when the tree is dormant. This species develops a naturally open, rounded crown and generally requires little intervention. Remove any dead, diseased, or crossing branches to maintain form and health, but avoid heavy pruning, which can stress the tree and invite canker and borer problems.
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“American mountain ash evolved in the cool forest understories of northeastern North America, where it developed alongside the region's native ecology. From Newfoundland to Manitoba and south through the Appalachian chain to Georgia, this species occupied a specific ecological niche in mountain and boreal forests. Its natural range and adaptation to cool climates reflect millennia of evolution in these regions, and it has remained a fixture of northeastern landscapes and native plant communities since European settlement. Gardeners and naturalists have long valued it for restoring native character to yards and preserving the aesthetic of mountain ecosystems.”