These are:<\/p>\n\n\n\n
- \n
- Limnocharis<\/a> (Limnocharis flava<\/em>)<\/li>\n\n\n\n
- Mikania vine<\/a> (Mikania micrantha<\/em>)<\/li>\n\n\n\n
- Miconia<\/a> (Miconia calvescens<\/em>, M. racemosa<\/em> and M. nervosa<\/em>).<\/li>\n<\/ul>\n\n\n\n
\n\n![\"\"](\"https:\/\/weeds.org.au\/wp-content\/uploads\/2024\/08\/Limnocharis-flava.jpg\")
Limnocharis flava<\/em> is an acquatic herb that produces prolific, tiny seeds with the potential to threaten the ecological balance of wetlands while offering breeding habitat for disease-carrying mosquitoes.<\/figcaption><\/figure>\n\n\n\n ![\"\"](\"https:\/\/weeds.org.au\/wp-content\/uploads\/2024\/08\/Mikania-micrantha.jpg\")
Mikania micranthra<\/em> is also known as ‘Mile-a-minute’ and is a native of Central and South America.<\/figcaption><\/figure>\n<\/div>\n\n\n\n \n![\"\"](\"https:\/\/weeds.org.au\/wp-content\/uploads\/2024\/08\/Miconia-tomentosa.jpg\")
Miconia (Miconia spp.<\/em>) are evergreen trees that can form dense thickets and established trees can produce millions of seeds each year that remain viable for more than six years.<\/figcaption><\/figure>\n<\/div>\n\n\n\n <\/div>\n<\/div>\n\n\n\nThe program is managed by Biosecurity Queensland (part of the Department of Agriculture and Fisheries) and is funded with contributions from the Australian, Queensland, New South Wales, Northern Territory and Western Australian governments.<\/p>\n\n\n\n
The Red Witchweed National Eradication Program<\/a> targets eradication of the sixth species, Striga asiatica<\/em><\/a>, a parasitic plant which grows on grasses, including sorghum, corn, sugar cane and various important pasture grasses.<\/p>\n\n\n\n
The program is managed by Biosecurity Queensland and is jointly funded\/supported by the Federal Government as well as state government agencies in Queensland, New South Wales and the Northern Territory plus Grain Industry Peak Bodies, Meat and Livestock Association and Canegrowers.<\/p>\n\n\n\n
Other species may be targeted for eradication at State or Territory level, like parthenium weed (Parthenium hysterophorus<\/em><\/a>) outside of Queensland, Karroo thorn (Vachellia karroo<\/em><\/a>) and Mexican feather grass (Nassella tenuissima<\/em>).<\/p>\n\n\n\n
Hawkweeds (Pilosella species<\/em><\/a>) are also the subject of eradication programs in New South Wales, Victoria and Tasmania.<\/p>\n\n\n\n
Check Outbreak<\/a> for more information about these and other weed eradication efforts.<\/p>\n\n\n\n
National Alert List for Environmental Weeds<\/h3>\n\n\n\n
The National Alert List for Environmental Weeds was developed in 2001. It identified 28 weed species that were in the early stages of establishment and had the potential to become a significant threat to biodiversity if they were not managed.<\/p>\n\n\n\n
Species were identified for the Alert List based on three criteria:<\/p>\n\n\n\n
\n- \n
- Posing a high or serious potential threat to the environment<\/li>\n\n\n\n
- Having limited distribution within Australia at present<\/li>\n\n\n\n
- Being amenable to successful eradication or containment programs.<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n
While this list is no longer in formal use by governments, the following list of species still represent serious weed risks and control activities continue to be undertaken for certain species in some parts of Australia. Refer to the Weed Profiles for specific species information.<\/p>\n\n\n\n
- Mikania vine<\/a> (Mikania micrantha<\/em>)<\/li>\n\n\n\n