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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


A fine bi-pinnate leaved evergreen shrub or tree growing 4-6m high, somewhat resembling the large-leafed black wattle (Acacia mearnsii). The dark green leaves are paler below, up to 300 mm or longer and golden-hairy. Cream-coloured flowers appear in dense, bottlebrush-like heads from June-August followed by brown compressed seed pods with raised edges. The seeds emit a nauseating odour when crushed and this tree is poisonous. It invades forest margins, river banks, moist slopes in fynbos and wooded kloofs.

Published in Invasive Plants

A tall slender, evergreen tree growing 15-40m high with smooth, flaky, tan-coloured bark. The dark green leaves are glossy above and pale below and the foliage is concentrated at the end of the branches. Cream flowers appear from October to February and the tree produces brown fruit capsules. The leaves are poisonous producing prussic acid. This tree invades fynbos, forest clearings, plantations, water courses and roadsides.

Published in Invasive Plants

A dense spreading or erect shrub or tree up to 6m high. The leaves are smooth and up to 100mm long and form sharp-pointed needles 30-50mm long and are dark-green to grey-green in colour. There are 46–84 flowers, cream in colour and fragrant, forming elongated, axillary clusters up to 20mm long and flower from June to September. Seeds consist of woody capsules approximately 25mm long and 20mm wide.

Published in Invasive Plants

A very spiny annual herb growing up to 90cm high with stems that exude a yellow sap when cut. Grey or bluish-green spiny leaves with prominent white veins. Pale yellow or creamy white flowers appear from September to January. Spiny, oblong green fruit capsules turn 

Published in Invasive Plants
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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