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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Invasive Species South Africa - Protecting Biodiversity from Invasion - Displaying items by tag: perennial

Balloon vine is a perennial, slightly woody climber with tendrils 2-5m or higher, often draping itself over trees. The stems are usually covered with bristly hairs. Bright green leaves are strongly serrated and sometimes hairy. White or yellow, fragrant flowers on compact heads appear from October to January. Membranous, inflated fruit capsules about 60mm long which are green turning brown

Published in Invasive Plants

Bent grass is grey-green, rather fine-leaved perennials, forming tufts 30–90 cm, with long slender rhizomes; branching intravaginal. Leaf-sheath glabrous, brownish green or purplish. Ligule 0.7–2 mm, or up to 3 mm in culm leaves, taller than wide, somewhat tapered or rounded, minutely ciliate. 

Published in Invasive Plants

Birdeye Pearlwort is a perennial mat-forming plant with narrow leaves and tiny white flowers. It can become a troublesome weed when allowed to spread and establish in turf. This weed can populate most soil conditions very quickly by seed. Pearlwort is a good indicator of moist/wet conditions and is often mistaken for moss in lawns. Swards that are maintained at low mowing heights below 6mm (golf and bowling greens) are susceptible to invasion from this weed.

Published in Invasive Plants

A perennial herb growing up to 1m high with spreading branches which are softly downy when young. It has light green, thin leaves which are oval in profile with smooth margins. White or greenish to rosy flowers appear from October to June and this plant produces bright red berries. The leaves, roots and fruit are poisonous.

Published in Invasive Plants

A glabrous, perennial, tendril climber with cylindrical or slightly angular stems, growing to 5m or higher. The leaves are usually deeply five- to seven-lobed and with sickle-shaped stipules. The flowers are about 10cm diameter with 5 sepals and petals that are similar in appearance. Produces yellow or orange, ovoid berries which are reddish inside. This plant invades forest margins, bush clumps, roadsides and river banks.

Published in Invasive Plants
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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