Click on images to enlarge
habit in flower (Photo: Sheldon Navie)
lower leaves and habit prior to flowering (Photo: Sheldon Navie)
smaller upper leaves and young flower clusters (Photo: Sheldon Navie)
close-up of flowers (Photo: Sheldon Navie)
older flower clusters with reddish immature fruit (Photo: Sheldon Navie)
young plant (Photo: Sheldon Navie)
Amaranthus albus L.
Amaranthus albus L. var. pubescens (Uline & Bray) Fern.Amaranthus graecizans L. (misapplied)Amaranthus graecizans L. var. pubescens Uline & BrayAmaranthus pubescens (Uline & Bray) Rydb.
American tumbleweed, prostrate amaranth, prostrate pigweed, rolypoly, stiff tumbleweed, tumble pigweed, tumble weed, tumbling pigweed, tumbleweed, white amaranth, white pigweed
Native to large parts of North America (i.e. Alaska, Canada and the USA), but its exact native range is obscure.
Widely naturalised in the temperate regions of southern Australia. It is found throughout Victoria, in the ACT, in many parts of South Australia and in south-western Western Australia. It is also present in many parts of New South Wales, particularly in the southern tablelands and slopes regions, and has occasionally been recorded in Tasmania.
Tumbleweed (Amaranthus albus) is mainly a weed of agricultural areas and habitation. It is a serious weed of agriculture in southern New South Wales, and is typically a pest of crops, roadsides and waste areas in this region. However, it is also regarded as an environmental weed in Western Australia and Tasmania and grows in natural areas in other states too.
In Tasmania, tumbleweed (Amaranthus albus) is found mostly in association with railway lines. It has been recorded between Forest and Stanley in the north-west, at Bridgewater and in the Derwent Valley in the south, and at Deloraine in the north of the state. It is also said to be adversely impacting on biodiversity values in Tasmania and known populations are subject to eradication. Tumbleweed (Amaranthus albus ) has also been recorded in conservation areas in Victoria (i.e. Barkindji Biosphere Reserve, Organ Pipes National Park and Yarra Bend Park) and South Australia (i.e. Marino Conservation Park and Onkaparinga River National Park).
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.
Copyright © 2016. All rights reserved. Identic Pty Ltd. Special edition of Environmental Weeds of Australia for Biosecurity Queensland.
The mobile application of Environmental Weeds of Australia is available from the Google Play Store and Apple iTunes.