
Foliage of balloon vine - Cardiospermum grandiflorum
Environmental and other impacts
Cardiospermum grandiflorum forms dense infestations that outcompete indigenous vegetation. It is a major weed in riparian zones (banks of watercourses) in South Africa. It is rapidly spreading beyond urban areas in East Africa. Although not a very serious problem yet in the region, it has massive potential for further spread. It can smother native plants and prevent the free movement of wildlife so has great potential to negatively impact upon biodiversity.
C. grandiflorum has been included in the Global Invasive Species Database (GISD 2008). It has been listed as a noxious weed in South Africa (prohibited plants that must be controlled. They serve no economic purpose and possess characteristics that are harmful to humans, animals or the environment) and in in the Australian states of New South Wales and Queensland, Australia.
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''Cardiospermum grandiflorum'', commonly known as balloon vine, heart pea or heart seed, is a species of climbing plant native to eastern Argentina and Brazil. It was described by Olof Swartz and is in the family Sapindaceae. The species can grow over 10 m long and it has small white flowers.
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