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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

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Jacaranda

Jacaranda mimosifolia

Common name:

Jacaranda

Scientific name:

Jacaranda mimosifolia (Bignoniaceae)

Alternative common names:

Blue Brazilian; blue jacaranda; Brazilian rosewood; fern tree (English); jakaranda (Afrikaans)

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.

Additional Info

  • Where does this species come from?

    South America (north-west Argentina)

    What is its invasive status in South Africa?

    CARA 2002 – Category 3 NEMBA – a. 1b in Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga and North-West. b. Not listed for urban areas in Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga and North-West. c. Not listed within 50 metres of the main house on a farm in Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga and North-West, for trees with a diameter of more than 400 mm at 1000 mm height at the time of publishing of this Notice, provided such trees are located outside riparian areas. d. Not listed elsewhere.

    Where in South Africa is it a problem?

    Common throughout Mpumalanga, Limpopo, Gauteng and KwaZulu-Natal Provinces.

    How does it spread?

    Seed dispersal.

    Why is it a problem?

    Competes with and replaces indigenous species. Dense stands along watercourses are likely to reduce stream flow.

    What does it look like?

    General description: Deciduous or semi-deciduous tree up to 22m high with a rounded, spreading crown. Leaves: Divided, slightly hairy fern-like leaves which are dark green, but turn yellow in late autumn or winter. Flowers: 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. Fruit/Seeds: Distinct, purse-shaped oval, flattish, woody green capsules about 60mm long, which turn brown and split open after about a year to release numerous flat, winged seeds.

    Does the plant have any uses?

    Used as an ornamental and hedge plant, as well as a very popular pavement tree.

    Plant me instead alternatives

    Tree wisteria (Bolusanthus speciosus), coral tree (Erythrina lysistemon), pom pom tree (Dais cotinifolia), Cape chestnut (Calodendrum capense).

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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