Robust, tufted perennial, grass-like or herb (sedge), ca 1.4 m high. Fl. green, Oct to Dec or Jan or Jun to Jul. Irrigated pastures, swamps.
Beard’s Provinces: South-West Province.
IBRA Regions: Avon Wheatbelt, Esperance Plains, Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions: Avon Wheatbelt P2, Fitzgerald, Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren.
Local Government Areas (LGAs): Augusta Margaret River, Busselton, Capel, Dardanup, Gosnells, Harvey, Jerramungup, Kalamunda, Melville, Northam, Stirling, Waroona.
Alternative Names. Tall Flatsedge, Golden Nutsedge, Nutgrass, Earth Almond, Pale Galingale, Drain Flat Sedge.
General Biology. Growth form. Sedge. Life form. Perennial. Reproduction. Primarily seed, also rhizomes. Dispersal. Soil, water, occasionally animals (by adhesion).
Notes. Weed of irrigated crops, gardens, lawns and disturbed wetlands. Can obstruct irrigation channels and drains. Small seed is mainly spread by water, and may also be transported by animals. Hardy once established.
Additional information. Origin. South America.
Suggested method of management and control. Hand remove small/isolated infestations ensuring removal of all rhizomes. Otherwise try 1% glyphosate + Pulse®. 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/