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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

Rubber vine

Cryptostegia grandiflora

Common name:

Rubber vine

Scientific name:

Cryptostegia grandiflora

Alternative common names:

India rubber vine, Palay rubber vine, purple allamanda. 

Rubber vine is a perennial woody climber or vine, which can also grow as a sub-shrub in open situations. It’s a highly invasive weed in semi-arid natural ecosystems, especially dry or monsoonal rainforest.

Additional Info

  • Where does this species come from?

    Madagascar

    What is its invasive status in South Africa?

    NEMBA Category 1b

    Where in South Africa is it a problem?

    Limpopo, Mpumalanga and North West Provinces.

    How does it spread?

    It is scattered short distances from the parent plant by wind that catches the tufts on the seed ends, or longer distances by floating on floodwaters. Most seed remains viable even after the pods have floated on fresh or salt water for over a month, potentially leading to spread between catchments. Seeds can also be potentially spread by birds, or in mud attached to vehicles, machinery and animals.

    Why is it a problem?

    Rubber vine smothers and kills native vegetation. It is a severe threat to biodiversity. It also severely threatens riverine vegetation, and can potentially displace the plants and animals that inhabit riverbanks, thereby affecting the water quality of streams. In addition, the vine exudes a poisonous, milky sap that is known to kill livestock and other animals that feed on the plant.

    What does it look like?

    Leaves:- The leaves occur in pairs and are a glossy dark green in colour. They are oval-shaped with tapered ends (elliptical), 60–100 mm long and 30–50 mm wide. Flowers: - Flowers large and showy, white internally, pinkish-white to lilac externally; corolla funnel- or trumpet-shaped, 5-6 cm long, 5-8 cm diameter, with 5 pointed, broadly spreading lobes. Fruit/seeds: - Fruits (follicles) are large green pods, 10-15 x 3-4 cm, produced in pairs horizontally opposed and diverging from the tip of a short common stalk; sharply 3-angled and tapering to a long beak. The pod contains 200-350 large (5-10 x 1.5-3 mm), ovate, brown seeds with a tuft (coma) of long (19-38 mm), fine, silky-white hairs at one end.

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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