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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

Spiked water milfoil

Myriophyllum spicatum

Common name:

Spiked water milfoil

Scientific name:

Myriophyllum spicatum

Alternative common names:

Eurasian water milfoil

Spiked water milfoil is a submerged aquatic plant that can rapidly take over a pond, lake or area of slow-moving water. It creates dense mats of vegetation that shade out other indigenous aquatic plants, diminish habitat and food resources valuable for fish and birds, and decrease oxygen levels in the water when the plant decays.

Additional Info

  • Where does this species come from?

    North America, Europe, Asia and North Africa.

    What is its invasive status in South Africa?

    NEMBA Category 1b.

    Where in South Africa is it a problem?

    All provinces except Free State.

    How does it spread?

    Via boats, transportation of habitat material and water currents.

    Why is it a problem?

    Spiked water milfoil forms dense, submerged masses which disrupt recreational activities and threaten aquatic ecosystems and irrigation schemes.

    What does it look like?

    Leaves: Olive-green, finely divided and arranged in whorls of 4-6. Flowers: Cream, small, 1.6-1.8mm long, female and male, arranged in whorls on emergent spikes 50-100 mm long. Fruit/seeds: Small nuts about 3mm in diameter.

    Does the plant have any uses?


    Plant me instead alternatives

    Water hornwort (Ceratophyllum demersum)

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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