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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It may take several years to become evident but is always fatal. Notes on Taxonomy and Nomenclature Top of page Ageratina combines the genus Ageratum with the suffix ‘ina’, meaning ‘pertaining to’, suggesting that the two genera are related; ‘adenophora’ is a combination of the Greek ‘aden’ a glandand ‘phoros’ meaning ‘bearing’ which refers to the oil-producing glands in the adenpphora.

This condition averatina be fatal if enough of the weed is consumed over a long period.

Distribution Top of page The native range of A. The distribution of Eupatorium adenophorum Spreng.

Ageratina adenophora – Wikipedia

The poisonous principle is unknown but feeding tests suggest that it is present only in flowering plants, though it also noted as poisonous just prior to flowering Trounce and Dyason, The fact that this plant often grows in swamps and difficult to access areas like riverbanks makes control difficult but herbicides have been used to control this plant. Widely naturalised in eastern Australia and also present in some parts of southern Australia.


Silene lanceolata no common name. Dicotyledonae Summary of Invasiveness A. Agave sisalana Perrine, Asparagaceae: It spread so fast that in some areas dairy farmers and banana growers abandoned their holdings Auld,; Holm et al.

Weeds of Australia – Biosecurity Queensland Edition Fact Sheet

Ageratina adenophora reproduces by asenophora which are easily dispersed by wind and float on water. The ‘seeds’ achenes are slender, reddish-brown or blackish-brown in colour, and slightly curved. This name was used by Dioscorides for a number of different plants. It has also invaded managed kikuyu pastures [Pennisetum clandestinum] in Queensland, Australia Land Protection, Sow the pasture mixture at a high rate and spotspray seedlings as they appear Auld, ; Parsons and Cuthbertson, A survey ageratinna natural enemies in the native range of the weed in Mexico was carried out by Osborne and the gall fly P.

Impact Top of page Crofton weed reduces adenophroa yield, affects the carrying capacity of grazing lands and restricts movement of stock and machinery. Sheldon Navie close-up of seeds Photo: Global Compendium of Weeds.

Cattle find it unpalatable, sheep and goats eat it without apparent ill ageraina if other pasture is present, but horses, eating it readily, die as a result. When several references are cited, they may give conflicting information on the status.

Alien weeds and invasive plants. The plant can spread vegetatively, that is the stems can sprout roots and grow upon contact with earth.

Ageratina adenophora is regarded as an environmental weed in many parts of the world. Phyllostegia mollis no common name. In fact, this species is the cause of an acute pulmonary ageratin in horses which is known as “Tallebudgera horse disease” in Queensland and “Numinbah horse sickness” in New South Wales.

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Plantago princeps laukahi kuahiwi. Outside its native range in Mexico, the only promising natural enemy reported is the native Australian crown-boring weevil, Dihammus argentatus. These ‘seeds’ mm long and 0.

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The tiny tubular florets mm long are white and contain both male and female flower parts i. However, like so many flowering plants, it can set down a significant seed bank in the soil so that other mechanical control can become continuous. Ageratina adenophora is a perennial herbaceous shrub that may grow to 1 or 2 metres 3. The endangered native jute Corchorus cunninghamii is also threatened by invasion of crofton weed Ageratina adenophora and other weed species at many of the locations where it is known to exist.

One study found that seedlings of this species that had begun to establish were soon out-competed by crofton weed Ageratina adenophoraand that there were dense populations of this and other weed species in some of the sites were this species adenphora found.

The gall fly, accompanied by a specific leaf spot disease caused by Mycovellosiella sp.