Slender, erect herb, 0.3-2 m high. Fl. yellow/green/cream/white, Feb to Aug. Loamy soils, peaty sand, deep white sand, granite, laterite, basalt. Banks of creeks, rivers & swamps,winter- wet sites, coastal plains, road verges.
Beard’s Provinces: Eremaean Province, South-West Province.
IBRA Regions: Avon Wheatbelt, Coolgardie, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Pilbara, Swan Coastal Plain, Warren.
IBRA Subregions: Avon Wheatbelt P2, Dandaragan Plateau, Eastern Goldfield, Geraldton Hills, Hamersley, Northern Jarrah Forest, Perth, Recherche, Southern Jarrah Forest, Warren.
IMCRA Regions: Abrolhos Islands, Leeuwin-Naturaliste, Pilbara (nearshore), Tweed-Moreton, WA South Coast.
Local Government Areas (LGAs): Albany, Augusta-Margaret River, Bayswater, Belmont, Boddington, Bridgetown-Greenbushes, Busselton, Canning, Cockburn, Dardanup, Denmark, East Pilbara, Esperance, Gingin, Gosnells, Greater Geraldton, Harvey, Irwin, Kalgoorlie-Boulder, Manjimup, Melville, Mingenew, Murray, Narrogin, Nedlands, Northam, Northampton, Pingelly, Plantagenet, Port Hedland, Serpentine-Jarrahdale, South Perth, Stirling, Swan, Victoria Plains, Wandering.
Alternative Names. Southeastern Annual Saltmarsh Aster, Aster weed Marsh Aster, , Shrub Aster Wild Aster.
General Biology. Growth form. Herb. Life form. Annual. Reproduction. Seed. Dispersal. Wind.
Notes. May also be biennial or short-lived perennial. Also naturalised in Europe, Mediterranean region, United States, Central America. Colonises disturbed wetlands. Summer-growing. Is an indicator for sites with high salinity and low/moderate waterlogging.
Additional information. Origin. South America. Similar exotic species. Conyza spp.
Suggested method of management and control. Hand remove isolated plants before seed set. Read the manufacturers' labels and material safety data sheets before using herbicides. For further information consult the Australian Pesticides and Veterinary Medicines Authority to determine the status of permits for your situation or state.
Legend: Y = Yes, regularly, O = Occasionally, U = Uncertain, referred by others but not confirmed.
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Western Australian Herbarium (1998–). FloraBase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. https://florabase.dpaw.wa.gov.au/