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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

Multi-stemmed acacia-like shrub or small tree up to 10m high with paired, straight spines and reddish-brown branchlets. Dark green leaves with leaflets 10-25mm long. Yellow flower spikes from June to November. Yellowish to purplish, slender, straight, woody pods. Pods poisonous and pollen is a respiratory tract irritant

Published in Invasive Plants

Erect shrub or small tree. Leaves narrow, elliptic, up to 12cm long, prominent midvein and net-venation. Flowers yellow balls held close to the stems, occurring in groups of 2-4 in the axils of the leaves, appearing in spring. Pods straight up to 100 mm long and 5 mm wide.

Published in Invasive Plants

A tall evergreen tree growing up to 20-40m high with arching, slender branches. The leaves have minute scales and occur in whorls. The scales are uniformly pale with sharp ribs. This tree produces male flowers as yellowish spikes and female flowers as reddish heads from September to April, as well as small brown woody cones and winged seeds with a flattened profile

Published in Invasive Plants

Vitex trifolia is a relatively small tree found primarily in countries that border on the Pacific and Indian oceans. It grows up to a maximum of about 8m, Vitex trifolia can either be regarded as a shrub or a small variety of tree. Its bark is a gray or brown color, and the leaves are generally about 12cm.

Published in Invasive Plants

The best-known city tree in Johannesburg and Pretoria – a deciduous or semi-deciduous tree up to 22m high with a rounded, spreading crown. Dark green, hairy, finely divided and fern-like leaves which turn yellow in late autumn or winter. Attractive mauve-blue to lilac or rarely white, tubular flowers produced in pyramidal sprays at the ends of usually leafless branches, flowering from September-November. Oval, flattish, woody green capsules about 60mm long, which turn brown and split open after about a year to release numerous flat, winged seeds. It invades savanna, wooded kloofs, rocky ridges and river banks.

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