Click on images to enlarge
dense infestation (Photo: Sheldon Navie)
habit (Photo: Sheldon Navie)
creeping habit (Photo: Sheldon Navie)
scrambling habit (Photo: Sheldon Navie)
leaves and flower-heads borne on very long stalks (Photo: Sheldon Navie)
paired lower leaves with deeply-toothed margins (Photo: Sheldon Navie)
close-up of hairy stems and leaf undersides (Photo: Sheldon Navie)
upper leaves, hairy stems and flower-heads from side-on (Photo: Chris Gardiner)
close-up of seeds (Photo: Sheldon Navie)
seedling (Photo: Sheldon Navie)
young plants (Photo: Sheldon Navie)
close-up of flower-head with toothed pale yellow 'petals' (Photo: Sheldon Navie)
Tridax procumbens L.
Asteraceae (New South Wales, Queensland, Victoria, Tasmania, Western Australia and the Northern Territory)Compositae (South Australia)
coat buttons, coatbuttons, Mexican daisy, tridax, tridax daisy, wild daisy
Native to Mexico, Central America (i.e. Belize, Costa Rica, El Salvador, Guatemala, Honduras and Nicaragua) and tropical South America (i.e. Venezuela, Bolivia, Colombia and Peru).
Widely naturalised in northern and eastern Australia (i.e. throughout large parts of Queensland, in far north-eastern New South Wales, in the northern and central parts of the Northern Territory, and in Western Australia). Also naturalised on Christmas Island, the Cocos Islands and the Coral Sea Islands.
Naturalised elsewhere in the tropical regions of the world, including in south-eastern USA (i.e. Florida), Africa (e.g. Zimbabwe), south-eastern Asia (i.e. Papua New Guinea, the Philippines, Cambodia, Indonesia, Malaysia, Singapore, Thailand and Vietnam), and on numerous Pacific islands (e.g. the Galápagos Islands, Fiji, French Polynesia, Guam, Kiribati, the Marshall Islands, Nauru, New Caledonia, Palau, Western Samoa, the Solomon Islands and Hawaii).
Tridax daisy (Tridax procumbens) is regarded as an environmental weed in Western Australia, the Northern Territory and Queensland.
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.
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