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Over 20 000 wild plant species have been assessed...
Conservationists are concerned about the conserva...
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Water hyacinth (Eichhornia crassipes) is a problem plant in many countries including South Africa. Water hyacinth invades dams and slow-flowing rivers where it creates mats up to 2m thick. These mats reduce light and oxygen in the water and alter the water chemistry. Other aquatic plants find it difficult to survive. In turn animal life, dependent on a diversity of plant life for survival, dies out. The increased evapo-transpiration from these plants leads to increased water loss from lakes and dams. The mats also clog intakes of irrigation, hydropower and water supply systems.
Rivers, lakes, wetlands and dams throughout South Africa are being invaded by invasive alien aquatic weeds. Introduced from abroad as pond or aquarium plants, these invasive water weeds are transforming our waterways, where they are being spread by fishermen and recreational boaters.
Hydrilla (Hydrilla verticillata) is one of the world’s worst submerged aquatic weeds. It was recently discovered on Pongolapoort Dam in KwaZulu-Natal. Experts predict disastrous consequences for the environment if the outbreak of hydrilla is allowed to spread to other provinces.
Rivers, lakes, wetlands and dams throughout South Africa are being invaded by invasive alien aquatic weeds. Introduced from abroad as pond or aquarium plants, these invasive water weeds are transforming our waterways, where they are being spread by fishermen and recreational boaters.
Hydrilla (Hydrilla verticillata) is one of the world’s worst submerged aquatic weeds. It was recently discovered on Pongolapoort Dam in KwaZulu-Natal. Experts predict disastrous consequences for the environment if the outbreak of hydrilla is allowed to spread to other provinces.
Rivers, lakes, wetlands and dams throughout South Africa are being invaded by invasive alien aquatic weeds. Introduced from abroad as pond or aquarium plants, these invasive water weeds are transforming our waterways, where they are being spread by fishermen and recreational boaters.
Hydrilla (Hydrilla verticillata) is one of the world’s worst submerged aquatic weeds. It was recently discovered on Pongolapoort Dam in KwaZulu-Natal. Experts predict disastrous consequences for the environment if the outbreak of hydrilla is allowed to spread to other provinces.
Rivers, lakes, wetlands and dams throughout South Africa are being invaded by invasive alien aquatic weeds. Introduced from abroad as pond or aquarium plants, these invasive water weeds are transforming our waterways, where they are being spread by fishermen and recreational boaters.
Hydrilla (Hydrilla verticillata) is one of the world’s worst submerged aquatic weeds. It was recently discovered on Pongolapoort Dam in KwaZulu-Natal. Experts predict disastrous consequences for the environment if the outbreak of hydrilla is allowed to spread to other provinces.
Rivers, lakes, wetlands and dams throughout South Africa are being invaded by invasive alien aquatic weeds. Introduced from abroad as pond or aquarium plants, these invasive water weeds are transforming our waterways, where they are being spread by fishermen and recreational boaters.
Hydrilla (Hydrilla verticillata) is one of the world’s worst submerged aquatic weeds. It was recently discovered on Pongolapoort Dam in KwaZulu-Natal. Experts predict disastrous consequences for the environment if the outbreak of hydrilla is allowed to spread to other provinces.
Rivers, lakes, wetlands and dams throughout South Africa are being invaded by invasive alien aquatic weeds. Introduced from abroad as pond or aquarium plants, these invasive water weeds are transforming our waterways, where they are being spread by fishermen and recreational boaters.
Hydrilla (Hydrilla verticillata) is one of the world’s worst submerged aquatic weeds. It was recently discovered on Pongolapoort Dam in KwaZulu-Natal. Experts predict disastrous consequences for the environment if the outbreak of hydrilla is allowed to spread to other provinces.
Rivers, lakes, wetlands and dams throughout South Africa are being invaded by invasive alien aquatic weeds. Introduced from abroad as pond or aquarium plants, these invasive water weeds are transforming our waterways, where they are being spread by fishermen and recreational boaters.
Hydrilla (Hydrilla verticillata) is one of the world’s worst submerged aquatic weeds. It was recently discovered on Pongolapoort Dam in KwaZulu-Natal. Experts predict disastrous consequences for the environment if the outbreak of hydrilla is allowed to spread to other provinces.
Rivers, lakes, wetlands and dams throughout South Africa are being invaded by invasive alien aquatic weeds. Introduced from abroad as pond or aquarium plants, these invasive water weeds are transforming our waterways, where they are being spread by fishermen and recreational boaters.
Hydrilla (Hydrilla verticillata) is one of the world’s worst submerged aquatic weeds. It was recently discovered on Pongolapoort Dam in KwaZulu-Natal. Experts predict disastrous consequences for the environment if the outbreak of hydrilla is allowed to spread to other provinces.
Rivers, lakes, wetlands and dams throughout South Africa are being invaded by invasive alien aquatic weeds. Introduced from abroad as pond or aquarium plants, these invasive water weeds are transforming our waterways, where they are being spread by fishermen and recreational boaters.
Hydrilla (Hydrilla verticillata) is one of the world’s worst submerged aquatic weeds. It was recently discovered on Pongolapoort Dam in KwaZulu-Natal. Experts predict disastrous consequences for the environment if the outbreak of hydrilla is allowed to spread to other provinces.
Submit your photos of invasive species!
If you have photographed invasive species or have noticed invasions of species around South Africa, click here to send them to us.
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The primary focus of Firewise SA is to create awareness of the dangers of wild fires and to equip homeowners, community leaders, planners and developers with the knowledge and skills of fire prevention. The protection of families, property and the environment before a fire starts is a Firewise priority, as is the provision of an action plan in an emergency. For more information, 
In order to raise awareness of the link between invasive alien plant species and the danger of runaway fires, the 
