unknown

Ulmus davidiana var. davidiana

Ulmaceae · broadleaf deciduous shrub · introduced

Last updated March 8, 2026

Data Coverage 1 of 6 dimensions

Site Data

Threats

Cultivars

Phenology

GDD Thresholds

Puget Sound

Quick Facts

Origin

restricted to China, found in the provinces of Hebei

Diseases (4)

Neonectria ditissima Nectria Canker Ophiostoma novo-ulmi Dutch Elm Disease Enterobacter cloacae Bacterial Wetwood Slime Flux Enterobacter cloacae and Klebsiella pneumoniae Bacterial Wetwood

Pests (10)

Aphidoidea Aphid Scolytinae Bark beetle Nymphalis antiopa Spiny elm caterpillar Gossyparia spuria European elm scale Fenusa ulmi Elm leafminer Xanthogaleruca luteola Elm leaf beetle Prionoxystus robiniae Carpenterworm Hyphantria cunea Fall webworm Lepidosaphes ulmi Oystershell scale Spiny elm caterpillar (mourning cloak butterfly)