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Africa Geographic
Wildlife . People . Travel
Africa Geographic Travel

Written by: Catherine Browne

The SANBI National Botanical Gardens are full of wonderful stories to be told and fascinating species to see and learn about. Next time you are in one of these beautiful gardens in South Africa, take the time to stop and read the informative interpretation boards or chat to the gardeners.

Strolling around Kirstenbosch, you are likely to come across a very striking large tree next to the otter pond. Here we share some interesting facts about that tree: the African/red mahogany (Khaya anthotheca).

Red mahogany at Kirstenbosch Botanical Garden in Cape Town ©Andrew Massyn

– Legend has it that an early botanist visiting Africa many years ago, saw this tree growing in a forest and asked his guide what it was called. The reply being ‘Khaya’ – which in the guide’s language meant ‘I don’t know’. The botanist, none the wiser, diligently wrote this down and the genus was named accordingly.

– The species name anthotheca means flower in a case – although it is the seeds that are found in a hardened wooden case.

– The African mahogany naturally grows at medium to low altitudes in evergreen forests and riverine fringe forests, so the one at Kirstenbosch is actually very far from home!

Young mahogany trees
Young mahogany trees in Kiang West National Park/The Gambia ©Ikiwaner

– The African mahogany is often planted as a decorative shade tree for large gardens and parks. It is fast growing and needs deep fertile soil, as well as ample water in summer and spring.

– The ‘Big Tree’ of the Chirinda Forest in Zimbabwe is a Khaya anthotheca – reaching up to 60m tall.

Big Tree at Chirinda Forest
Big Tree at Chirinda Forest in south-eastern Zimbabwe ©Bart Wursten

– This species is listed as Vulnerable, facing risk of extinction in the wild. It is heavily exploited for timber, particularly in East and West Africa, but some populations are being protected as in some countries log export is banned and/or felling is limited.

African mahogany logs in West Africa
African mahogany logs in West Africa

– It is more than just a pretty face. The African mahogany yields one of the most important woods in many parts of Africa. It is hard, works easily and has a handsome grain. It also takes to fine polish, making it popular for furniture, flooring and panelling. It weathers well and is resistant to borers and termites.

African Mahogany kitchen cabinets ©j l t
African mahogany kitchen cabinets ©j l t

– The bark is bitter and used to treat colds, while the seed oil can be rubbed into the scalp to kill insects like lice.

– The ‘genuine’ mahogany comes from three trees in the genus Swietenia, native to the Americas but now also planted in Asia – also members of the mahogany family. There are 15 more mahogany family trees that yield comparable timber, such as Khaya and Entandophragma from Africa, Toona from India, China, Australia and Indonesia, and Dysoxylum from New Zealand.


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