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German wasp | Vespula germanica

German wasp

Vespula germanica

Coral bush | Ardisia crenata

Coral bush

Ardisia crenata

Purple loosestrife | Lythrum salicaria

Purple loosestrife

Lythrum salicaria

Pom pom weed | Campuloclinium macrocephalum

Pom pom weed

Campuloclinium macrocephalum

Canarybird bush | Crotalaria agatiflora

Canarybird bush

Crotalaria agatiflora

Peanut butter cassia | Senna didymobotrya

Peanut butter cassia

Senna didymobotrya

Rubber vine | Cryptostegia grandiflora

Rubber vine

Cryptostegia grandiflora

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Environmental Programmes

In order to tackle our country’s socio-economic challenges, the government adopted the Outcomes based approach to improve government performance and providing focus on service delivery. find out more

Carduus nutans in South Africa: distribution, threats, and opportunities for management

Carduus nutans in South Africa: distribution, threats, and opportunities for management
Kanyisa Jama and Thifhelimbilu Rambuwane
Invasive Species Programme, South African National Biodiversity Institute, 4a Princess Road office Park Vincent, East London 5200

Carduus nutans is native to Europe and Asia, but is a serious invader in many parts of its introduced range in North America, South America, Australia, and New Zealand. For example, in the United States the species is declared as a noxious weed in 22 states.   It is unclear how the species was introduced into South Africa.  .  However the first SAPIA records dates back to 1925, and it is now widespread in areas like Grahamstown, Cradock, Kenton-on-Sea, Paterson and Addo, yet it has not been categorized and listed as an invasive plant under CARA or NEM:BA.   Here we propose a research project to assess the current distribution and risks posed by Carduus nutans to South Africa. The results of the risk assessment will give us an indication of whether the species is a threat to South Africa, what management options are available, and whether the species should be listed as an invasive species requiring control.

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General News Updates

2019 National Symposium on Biological Invasio…


This is your invitation to South Africa's 2019 National Symposium on Biological Invasions. The convention is hosted by the Centre for Invasion Biology (CIB), University of Stellenbosch, and the Biolo... Read more

2019 Invasive Species Training


During the past five years (2014-2018), ISSA invasive species trainers have trained 4 000 in the identification of invasive species and laws pertaining to invasive species across South Africa.  ... Read more

Alien Grass Working Group


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Permits for planting indigenous Cynodon?


On 16 February, 2018, South Africa's Department of Environmental Affairs issued amendments to the regulations and lists relating to the National List of Invasive Species.  Updates to the draft&n... Read more

Invasive species training 2018 dates released


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Communications post for Africa advertised


The Nature Conservancy has advertised a brand new post:  Communications Manager, Africa Region. Knowledge of invasive species and water would be an asset in this post. See details below:    Job Titl... Read more