BBC Bitesize asked experts from the Royal Botanic Gardens, Kew, to tell us more about six of the world’s most astonishing plants ... in the inhospitable Namib Desert of Angola and Namibia ...

A sun-swept corner of the Painted Desert draws more than 600,000 visitors each year. While most come to see one of ... several hundred species of fossil plants and animals in Petrified Forest.

Today, every area of the country has been invaded by a variety of these plants. The most species are found in the Western Cape, Eastern Cape and KwaZulu-Natal provinces, and major urban centres.