Erect perennial, herb, 0.3-1.5 m high. Fl. white-green, Oct to Dec or Jan to Feb. Sandy soils. Riversides, roadsides, edges of drains.
Beard’s Provinces: South-West Province.
IBRA Regions: Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions: Dandaragan Plateau, Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren.
IMCRA Regions: WA South Coast.
Local Government Areas (LGAs): Albany, Armadale, Augusta-Margaret River, Bridgetown-Greenbushes, Busselton, Chittering, Collie, Denmark, Gingin, Gosnells, Harvey, Manjimup, Murray, Nannup, Serpentine-Jarrahdale, South Perth, York.
Alternative Names. Clustered Green Dock, Green Dock.
General Biology. Growth form. Herb. Life form. Perennial. Reproduction. Seed, root fragments. Dispersal. Animals, soil, machinery. Seedbank persistence. Long term, 5+ years.
Notes. Widely naturalised in America, Australia and New Zealand. Can be abundant in summer-moist areas. Seeds are shed in autumn and germinate mainly in the spring in consecutive years. Seeds are long-lived and undergo a seasonal dormancy cycle, with a low level of dormancy in winter and early spring and a deep dormancy in summer. Targeted for biological control by the Australian Weeds Committee in the 1980s.
Additional information. Origin. Northern Africa, temperate Asia, Europe. Similar native species. em>Rumex dumosus, R. drummondii.
Suggested method of management and control. Hand remove small/isolated infestations of seedlings and young rosettes. If removing older plants ensure entire plant, including the root, can be removed, otherwise spread will occur from root fragments. Alternatively spot spray with 1% glyphosate + surfactant in early bud stage. Use a higher rate on well established plants. 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/