Locations within which Ageratina adenophora is naturalised include Australia, southern Europe, Africa, Asia, New Zealand, south-western USA and many. Photo: Bart Wursten Ballantyne Park, Harare. Ageratina adenophora. Photo: Bart Wursten Ballantyne Park, Harare. Ageratina adenophora. Photo: Bart Wursten. A. adenophora has proved to be a very aggressive invasive species in some parts of the world, notably Australia, where it forced some farmers.

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Sheldon Navie the branched flower clusters at the tips of the stems Photo: The branched stems are densely covered in sticky i.

Factsheet – Ageratina adenophora (Crofton Weed)

Long-term effects upon community structure and ecological processes have been inadequately studied. Moist south-facing slopes are preferred in Queensland, Australia Land Protection,though it does not appear to be restricted to such areas.

Carmichaelia exsul and Calystegia affinis. These flower-heads mm across are borne in large numbers and arranged in clusters at the tips of the branches i. Its spread is restricted there n Biological control of weeds in India. Ageeatina dark green; opposite, broadly trowel-shaped, cm long, 2. Techniques for xylitol production from the stem of Eupatorium adenophorum Spreng by microorganism fermentation.

As an introduced species, it is likely to be more widespread than indicated in this distribution list, especially in China, South and South-East Asia.

It has been present in the Sydney area since approximately Trounce and Dyason, Small infestations can be dug out and exposing the roots. Ageratum houstonianum blue billygoat weedAgeratum conyzoides subsp. Silene perlmanii no common name Current Classification: US Fish and Wildlife Service, adenoophora. Once established, seedlings tolerate shade and can grow rapidly, and occasional plants are able to develop into substantial infestations.


Ageratina adenophora Asteraceae new species to the Italian alien flora and observations on its environmental threats. This species tends to locally dominate exposed sites, where it excludes native species. Schiedea lydgatei no common name. The use of this species epithet is common, especially in Asian populations; further work is, however, required in order to elucidate the exact relationship between these populations and those of A.

Distribution Top of page The native range of A. Social Impact Top of page The social impacts of farmers being forced to abandon their adenophorra because of A. Controlling the weed before it seeds will reduce future problems.

Ageratina adenophora – Wikipedia

Australian Journal of Science, It established successfully, but the amount of damage fluctuated because of parasitism by indigenous hymenopteran insects. However, whether due to the effects of quarantine, declaration as a weed or to other reasons, Australia’s Virtual Herbarium Royal Botanic Gardens Sydney, still only records it as present in New South Wales and Queensland, rare in South Australia and absent elsewhere in the country.

The editors are not aware of records of the presence of A. Adeophora in doubt consult an expert.

Winning the war of Weeds: However, as it has been cultivated as an ornamental in most mainland states, it has become naturalized in and close to some urban areas, particularly suburban Adelaide and along the Murray River in South Australia Auld,; Holm et al. Recovery Plan for Oahu Plants: Memoirs of the botanical survey of South Africa No Ageraina spread slowly over the next 10 years but became more aggressive between and None of these organisms offer any real degree of control individually, but the combined effect has reduced plant vigour Dodd, ; Haseler, ; Cullen and Ageratiina, Crofton weed, Ageratina adenophora.


It produces numerous upright erect stems from a woody rootstock. Originally grown as an ornamental plantit has become invasive into farmland and bushland worldwide. Click on images to enlarge. Guide to the naturalized and invasive plants of Eastern Africa, [ed.

Consistent follow-up work is required for sustainable management. Sheldon Navie seedling Photo: The introduction of Eupatorium species to Australia.

Generate a print friendly version containing only the sections you need. Botanical Research Institute Witt, A.

Weeds of Australia – Biosecurity Queensland Edition Fact Sheet

It is a very significant environmental weed in south-eastern Queensland, where it was recently ranked among the top 20 most invasive plant species. Outbreaks occurred in Hawaii in the s, and subsequently in eastern Australia and Northland in New Zealand. Pathological findings include pulmonary interstitial fibrosis and alveolar epithelisation.

Click on images to enlarge comparison of crofton weed Ageratina adenophoraleft, and mistflower Ageratina ripariaright Photo: Seedlings grow rapidly and are fully established and able to regenerate from the crown, if damaged, within 8 weeks of germination. Progress and prospects in biological control of weeds. They may also be spread adsnophora by animals and vehicles and can contaminate agricultural produce. It occurs at many sites on the island, but is agerqtina apparent on exposed mountain slopes e.

It is typified by impaired ability to work or exercise and emphysema. National Germplasm Resources Laboratory. It prefers wetter pastures e.