Chinese Mountain Ash

Sorbus koehneana

Rosaceae · broadleaf deciduous shrub · introduced

Last updated March 8, 2026

Data Coverage 2 of 6 dimensions

Site Data

Threats

Cultivars

Phenology

GDD Thresholds

Puget Sound

Quick Facts

Height

6–10 ft

Light

Part Shade

Hardiness

Zone Zones 5a–8b

Origin

central China

Diseases (5)

Cytospora canker Cytospora Canker Erwinia amylovora Fire Blight Symptom category — not a single disease Leaf Spot Neonectria ditissima Nectria Canker Thekopsora minima and Naohidemyces vaccinii Rust

Pests (10)

Aphidoidea Aphid Choreutis pariana Apple-and-thorn skeletonizer Enarmonia formosana Cherry bark tortrix Pristiphora geniculata Mountain ash sawfly Pear sawfly (pear slug) Phytoptus pyri Pearleaf blister mite Otiorhynchus spp. Root weevil Malacosoma spp. Tent caterpillar Leaf blister mite Ash borer