Showy mountainash (Sorbus decora)

USDA Hardiness Zones

USDA hardiness zones
Showy mountainash
Showy mountainash Showy mountainash Showy mountainash Showy mountainash
Showy mountainash (Sorbus decora)
Zone Zone  more information
Hardy to zone 2b
Mature Height Mature Height
20 to 30 feet
Mature Spread Mature Spread
to 20 feet
Growth Rate Growth Rate
Sun Sun
Full Sun
Moisture Moisture
Moist soil, well drained
Fall Color Fall Color
Attracts Wildlife Attracts Wildlife
Flower Flower
Fruit Fruit
Evergreen Evergreen
Native to WI Native to WI
Additional Information Additional Information
rounded form; 20-30’ tall; 20’ wide; slow growing; large clusters of white flowers in May; orange-red fruit in fall; red fall color; full sun; prefers a cool, slightly acid soil, moist, and well-drained; intolerant to poorly drained, compacted soil, drought, air pollution, and salt; susceptible to a number of insects and diseases, especially fireblight; native to Wisconsin; hardy to zone 2b

UW Extension
For more information, see the UW Extension Urban Horticulture Team Web site:
Primary Author: Dr. Laura Jull
Photos by: Dr. Laura Jull and Dr. Ed Hasselkus

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