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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

Queen of the night

Cereus jamacaru

Common name:

Queen of the night

Scientific name:

Cereus jamacaru (Cactaceae)

Alternative common names:

Peruvian apple cactus (English); nagblom; bobbejaanpaal (Afrikaans)

A spiny tree 3-7m high with thick, succulent branches arising from a short, woody trunk. Spines are in groups of 5-10 and the cut stems don’t exude a milky latex. No leaves but showy white flowers appear at night from November to January and produces yellowish-pink succulent berries. This cactus invades savanna and rocky ridges

Additional Info

  • Where does this species come from?

    South America

    What is its invasive status in South Africa?

    Existing legislation: CARA 2002 – Category 1 NEMBA – Category 1b

    Where in South Africa is it a problem?

    Scattered parts of the Western Cape, Eastern Cape and Free State and more widespread in Gauteng, KwaZulu-Natal, Mpumalanga and especially Limpopo Province

    How does it spread?

    The seeds are spread by birds and monkeys that feed on the fruits

    Why is it a problem?

    It competes with and replaces indigenous species, forming dense infestations which reduces the carrying capacity of the land and the many spines on the plants cause injuries to grazing animals

    What does it look like?

    General description: A spiny tree with thick, succulent branches arising from a short, woody trunk; branches green to blue-green with prominent ribs; ribs sometimes broken and wavy. Flowers: White, showy flowers produced in November-January. Fruit/Seeds: Yellowish-pink to pink or red, succulent berries which are white inside with small, black seeds.

    Does the plant have any uses?

    Used as a hedge, ornamental and birds also feed on the fruits

    Plant me instead alternatives

    Common tree euphorbia (Euphorbia ingens), tree aloe (Aloe barberae), krantz aloe (Aloe arborescens).

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General News Updates

2019 National Symposium on Biological Invasio…

26-02-2019

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

22-01-2019

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

04-09-2018

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?

01-03-2018

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

28-02-2018

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

25-01-2018

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