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Parkinsonia (Parkinsonia aculeata) is a thorny shrub or small tree which thrives on a range of soil types in the semi-arid to arid sub-humid tropics and sub-tropics, particularly in regions with a distinct wet and dry season. Parkinsonia is a native of the southern United States, the Caribbean, Mexico and northern South America. It was introduced to Australia as a shade and ornamental shrub in the late 19th century.

Impact on environment

Parkinsonia, one of the most troublesome weeds in Australias Northern Territory

Parkinsonia: regarded as one of the most troublesome weeds in the NT

This spiny plant spreads by seed, often forms thickets along watercourses. Today, it is a major weed and infests large areas of Western Australia, Northern Territory and Queensland, amounting to more than 800,000 hectares, primarily along waterways. 


Biological control programs are already under way and there is little more that can be done about its broad-scale control. In some areas of North East Queensland, graziers are using camels to control Parkinsonia, see Savanna Links article below.

To see a list of research findings on Parkinsonia click here .


15th Australian Weeds Conference

Weeds rampant: from hungry geese to scorching fires THE main reasons for the global weed explosion are global trade the atmospheric increase in CO 2 human interference in the nitrogen cycle and climate change—says US scientist… [read more...]

Camels take on Parkinsonia

Use of camels on a cattle property to reduce the weed Parkinsonia -- north-east Queensland [read more...]