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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

Rhodes University Aquatic weed and biocontrol database

Matthew Parkinson-Department of Zoology and Entomology, Rhodes University, Grahamstown

The database is primarily the compilation of data from 6 years (since 2008) of field surveys conducted by the Biological Control Unit of the Rhodes University Department of Zoology and Entomology, funded by Working for Water.

The survey focuses on the 5 floating aquatic weeds which are Red water fern (Azolla), Kariba weed (Salvinia molesta), Water hyacinth (Eichhornia crassipes), Parrot’s fearther (Myriophyllum aquanticum) and Water lettuce (Pistia stratiotes).

Data collected during these national field trips pertain to the species present at a site, the extent of the cover of the water body by each species, the present of the biological control agents and an assessment of general plant health and damage caused by the biological control agents that were present.

The data is useful firstly in documenting where the different weeds occur within the country and the extent to which biological control has been implemented in different regions and secondly contributes toward the long term monitoring and assessment of management strategies that have been implemented for various water bodies.

For more information please see the fact sheets below:

Red water fern (Azolla)

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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