Origin: North America
First finding in Slovenia: 1840
Pathways: hitchiker, secondary seeds are spreading with the wind
Possible to find: year-round
Flowering season: May – October
Habitat: Extensive meadows, fields, deserted agricultiral land, ruderal habitats, storage places for logs, gravel beds along streams, edges of roads and railroads.
Status in Slovenia: Very common, found in most oarts of Slovenia but only exceptionally above 1000 m a.s.l. in the mountains.
Similar species: White-flowering alien Aster-species (Symphyotrichum spp, especially S. lanceolatum and S. tradescantii) and the native False chamomile, Matricaria perforata).
More information on CABI