Erect or sprawling annual or biennial, herb, 0.1-0.5(-1) m high. Fl. yellow, Aug to Dec or Jan to May. Black sandy clay, yellow sandy soils, limestone. Coastal dunes, river & creek banks, road verges.
Beard’s Provinces: Eremaean Province, Northern Province, South-West Province.
IBRA Regions: Avon Wheatbelt, Carnarvon, Coolgardie, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Swan Coastal Plain, Victoria Bonaparte, Warren, Yalgoo.
IBRA Subregions: Avon Wheatbelt P2, Dandaragan Plateau, Edel, Fitzgerald, Geraldton Hills, Mardabilla, Northern Jarrah Forest, Perth, Recherche, Southern Jarrah Forest, Victoria Bonaparte P1, Warren, Wooramel.
IMCRA Regions: Abrolhos Islands, Central West Coast, Leeuwin-Naturaliste, WA South Coast.
Local Government Areas (LGAs): Albany, Augusta-Margaret River, Bunbury, Busselton, Cambridge, Capel, Carnarvon, Chittering, Cockburn, Dandaragan, Denmark, Esperance, Gingin, Greater Geraldton, Mandurah, Melville, Mundaring, Murray, Nedlands, Northampton, Perth, Ravensthorpe, Rockingham, Shark Bay, South Perth, Stirling, Subiaco, Swan, Wanneroo, Waroona, Wongan-Ballidu, Wyndham-East Kimberley.
Alternative Names. Indian Sweet-clover, Small Melilot, Sour-clover, Yellow Sweet Clover.
General Biology. Growth form. Herb. Life form. Annual. Reproduction. Seed. Dispersal. Water, wind. Toxicity. Poisonous to mammals. Seedbank persistence. Possibly 20+ years.
Notes. Can be biennial. Widely naturalised throughout the world. Weed of highly disturbed bushland, occurring in a wide range of habitats. Grows in moderately saline areas. Has high nodulation and nitrogen-fixing capacity. Leaves can solar-track throughout the day.
Additional information. Origin. Western Asia, middle, temperate and tropical Asia, Indian subcontinent, southern Europe, northern Africa, Macronesia. History of use/introduction. Honey production, erosion control, soil improver, forage, medicines.
Suggested method of management and control. Hand remove small/isolated populations. If slashing cut below lowest branch axil to prevent resprouting. 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.