Click on images to enlarge
dense infestation (Photo: Sheldon Navie)
infestation (Photo: Trevor James)
habit (Photo: Trevor James)
habit (Photo: Sheldon Navie)
leaves and flowers (Photo: Trevor James)
stems and leaf undersides (Photo: Sheldon Navie)
close-up of stems and leaves (Photo: Trevor James)
tiny flowers in the leaf forks (Photo: Trevor James)
close-up of flowers (Photo: Trevor James)
small knotweed (Polygonum plebeium), a similar native plant with narrower leaves (Photo: Sheldon Navie)
Polygonum arenastrum Boreau
Polygonum aequale Lindm.Polygonum aviculare L. (misapplied)Polygonum calcatum Lindm.Polygonum plebeium R. Br. (misapplied)
bird grass, box knotweed, common knotweed, door weed, doorweed, door-yard knotweed, dooryard knotweed, Engelmann's knotweed, equal-leaved knotgrass, hogweed, knotweed, mat grass, matweed, oval-leaf knotweed, ovalleaf knotweed, prairie knotweed, prostrate knotweed, sand wireweed, small leaved wireweed, small-leaved knotgrass, small-leaved knotweed, stone grass, wiregrass, wireweed
Native to Europe, western Asia and northern Asia (i.e. northern China, Japan, Korea, Mongolia and Russia).
Widely naturalised in southern Australia (i.e. in New South Wales, the ACT, Victoria, Tasmania, south-eastern and eastern South Australia and south-western Western Australia). Also recorded from the northern parts of Western Australia.
Sand wireweed (Polygonum arenastrum) is regarded as an environmental weed in Victoria.
Fact sheets are available from Department of Employment, Economic Development and Innovation (DEEDI) service centres and our Customer Service Centre (telephone 13 25 23). Check our website at www.biosecurity.qld.gov.au to ensure you have the latest version of this fact sheet. The control methods referred to in this fact sheet should be used in accordance with the restrictions (federal and state legislation, and local government laws) directly or indirectly related to each control method. These restrictions may prevent the use of one or more of the methods referred to, depending on individual circumstances. While every care is taken to ensure the accuracy of this information, DEEDI does not invite reliance upon it, nor accept responsibility for any loss or damage caused by actions based on it.
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