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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

Plans for the eradication of small populations of Asphodelus fistulosus from the West Coast of South Africa

Plans for the eradication of small populations of Asphodelus fistulosus from the West Coast of South Africa
Nolwethu Jubase1, Ernita van Wyk1 and Stephen Boatwright2
1Invasive Species Programme, South African National Biodiversity Institute, Private Bag X7, Claremont, 7735.
2Department of Biodiversity and Conservation Biology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa.

Asphodelus fistulosus (onion weed), native to Europe, was recently recorded in South Africa for the first time and represents a first record of an invasive member of the Asphodelaceae family in South Africa. So far, five small   populations (<100 m2) of this plant have been found along disturbed roadsides in deep sandy soils on the West Coast of South Africa. The known extent of the infestation in South Africa is still limited, such that it may be a feasible eradication target. The species is an aggressive invader in other parts of the world, notably South West Australia and Califonia. Very little information is available to guide the practical management of this species. To confirm the current extent and the feasibility of eradication, we propose to: a) survey known A. fistulosus patches in a predetermined radius from each population and along all the nearby roadsides; b) distribute pamphlets  asking  for  sightings  of  the  plant;  c)  compare  the  efficacy  of  two  control  methods (chemical vs. mechanical); and d) monitor the post-treatment recovery of A. fistulosus. We hope to determine  whether  eradication  is  feasible  for  this  species,  and  what  control  method  is  most effective.

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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


Who are we? The South African National Alien Grass Working Group was jointly initiated by the South African Biodiversity Institute (SANBI) and the Centre for Excellence in Invasion Biology (C·I·B) in... Read more

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


Interested in invasive species?  How much do you know about NEMBA invasive species compliance for landowners and organs of state? The South African Green Industries Council (SAGIC) have released... Read more

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