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The NEMBA regulations state that the seller of any immovable property must, prior to the relevant sale agreement, notify the purchaser of the property in writing of the presence of listed invasive species on that property.

The single mostly costly conservation intervention is the control of invaders. Here in the Crocodile River Reserve, the scourge of invaders threatens the entire grassland and the wetlands. Even the higher, less accessible areas of bushveld are under threat.

What is the threat?

Invaders replace the natural plants, changing not only the rich variety of naturally occurring wildflowers, grasses and trees, but also the animals. Many other species rely on the plants for food and shelter. As the type of animal attracted to, or able to live off the natural vegetation changes, so does the selection of all other creatures. The ripple effect alters the entire “system”.

What have we observed about addressing the pompom threat?

The legislation which descibes how invasive species must be dealt with is the National Environmental Management: Biodiversity Act.  The Act has regulations and lists of invasive species associated with Categories.  These categories indicate how the species need to be managed. 

October to February is the time of the year when the war against the pink peril is at its most intense. The alien invader pompom (Campuloclinium macrocephalum) is at once costly and attractive with a showy bright-pink powder puff flower.

The plant thrives in wetlands and riverine areas, but also invades roadsides, old lands, and drier veld.  Verbena is often found side-by-side with pompom. 

Lantana is one of the worst weeds in the world.  In South Africa it requires landowners and landuser to prevent seed formation, spread and growth. 

A shrub or small tree  which tends to invade bushland areas.  It is not an attractive tree - the leaves are dull and hairy and the purple flowers relatively small.

Mexican poppy is poisonous to stock, but few deaths occur because the plant is not readily eaten. This is due to the bitter yellow sap which makes it unpalatable to stock.

An attractive small tree with bright trumpet-shaped yellow flowers.  This tree often escapes the garden. 

Queen of the night is a perennial succulent tree, usually 6 to 7 m tall, which normally consists of a short main stem from which numerous thick, vertical branches grow.

A deciduous shrub or small tree up to 4m high with many slender branches. Seeds, leaves and flower are poisonous.

A large spreading tree which invades grasslands, roadsides, open spaces, road verges and river banks.  

Fountain grass is observed in many different habitats and tends to begin invading from the road verges.  It is particularly problematic in grasslands.

Tickseed is a rapidly spreading "emergent" invader.  It is listed as Category 1a, meaning it requires immediate attention.

Opuntia ficus-indica has minute leaves and bright yellow or orange showy flowers appear from October to December. The yellowish, turning reddish, edible fruit is covered with minute spines.