Prostrate, spreading annual, herb, to 0.35 m high, to 0.4 m wide. Fl. white-pink, Aug to Nov. Grey-brown sandy loam, ironstone gravel, laterite. Around wetlands, old gravel pits,parklands, pastureland, cultivated areas.
Beard’s Provinces: South-West Province.
IBRA Regions: Avon Wheatbelt, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Mallee, Swan Coastal Plain, Warren.
IBRA Subregions: Avon Wheatbelt P1, Avon Wheatbelt P2, Dandaragan Plateau, Fitzgerald, Geraldton Hills, Lesueur Sandplain, Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren, Western Mallee.
IMCRA Regions: WA South Coast.
Local Government Areas (LGAs): Albany, Augusta-Margaret River, Beverley, Boyup Brook, Bridgetown-Greenbushes, Broomehill-Tambellup, Bunbury, Busselton, Capel, Carnamah, Collie, Coorow, Cranbrook, Cunderdin, Dandaragan, Denmark, Donnybrook-Balingup, Dowerin, Dumbleyung, Esperance, Gingin, Gnowangerup, Goomalling, Greater Geraldton, Harvey, Kalamunda, Kojonup, Kondinin, Koorda, Lake Grace, Manjimup, Merredin, Mundaring, Murray, Narrogin, Nedlands, Northam, Perth, Plantagenet, Quairading, Serpentine-Jarrahdale, South Perth, Swan, Toodyay, Wagin, Wickepin, Williams, Wongan-Ballidu, Wyalkatchem, York.
Alternative Names. Subclover, Old Subterranean Clover.
General Biology. Growth form. Herb. Life form. Annual. Reproduction. Seed. Dispersal. Planted for pasture, contaminated hay, sheep (on fleece), other agricultural activities.
Notes. The most commonly sown pasture legume in Australia. Adapted to Mediterranean climates, typified by hot dry summers and moist, mild winters with annual rainfall of 350-1200 mm. Sensitive to salinity and prefers high soil fertility. Has hard seed coats and low germination rates in unsuitable environmental conditions. Germinates in autumn with main growth occurring during autumn to spring. Produces prolific seed. Seed can remain dormant for several years, enabling plants to compensate for years of low seed production. Fluctuating daily temperatures reduce seed-coat impermeability. Highly tolerant to grazing. Grazing of burrs by sheep during summer reduces seed banks.
Additional information. History of use/introduction. Forage. Similar exotic species. Trifolium spp.
Suggested method of management and control. Spot spray with 1% glyphosate before flowering, otherwise spot spray Lontrel® 3 ml/10L (150 ml/ha) up to 6 leaf stage. 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/