Origin: East Asia (China)
First finding in Slovenia: 1850
Pathways: ornamental plant; planted in forests, seeds are secondary spread by the wind
Possible to find: year-round
Flowering season: May-June
Habitat: Dry ruderal habitats and a pioneer species in abandoned dry meadows; also in cracks in rocks. Regularly planted as an ornamental tree.
Status in Slovenia: Common in lowland and hilly regions, especially in central and eastern Slovenia. A major problem in urban environments, because it is germinating in small cracks (e.g. in walls and between tiles in the pavement).
Similar species: European ash, Fraxinus excelsior, American Eastern black walnut, Juglans nigra and American Staghorn sumac, Rhus typhina.
More information on CABI