The Salvinia Molesta, more commonly known as Kariba weed, is an invasive species of free-floating water fern from Brazil. The ...

Scientists hope hungry black weevils imported from Louisiana can help tackle South Africa's invasive water plant problem.

South Africa’s already vulnerable freshwater ... “If you pull the hyacinth away, this plant is lurking,” said Coetzee. The invasive plants block out the sunlight, which means no oxygen ...

South Africa’s already vulnerable freshwater ... “If you pull the hyacinth away, this plant is lurking,” said Coetzee. The invasive plants block out the sunlight, which means no oxygen ...

South Africa’s already vulnerable freshwater ... “If you pull the hyacinth away, this plant is lurking,” said Coetzee. The invasive plants block out the sunlight, which means no oxygen ...

HARTBEESPOORT, South Africa (AP) — Dozens of tiny black weevils ... which is made up of an unwanted, invasive South American aquatic plant called Salvinia minima.