Walter Sisulu National Botanical Garden Earns International Level II Accreditation
The Walter Sisulu National Botanical Garden in Roodepoort has received international recognition after being awarded Level II Accreditation by the ArbNet Arboretum Accreditation Program, in partnership with The Morton Arboretum. The accolade acknowledges the garden’s adherence to high standards of professional practice in arboretum and botanical garden management.
ArbNet’s accreditation programme is the only global initiative that formally recognises arboreta at different stages of development, capacity and professionalism. With this achievement, the Walter Sisulu National Botanical Garden is now officially listed in the Morton Register of Arboreta a respected global database of arboreta and gardens dedicated to the conservation and study of woody plants. The award further strengthens the garden’s standing as one of South Africa’s leading centres for plant conservation and public engagement. The garden falls under the South African National Biodiversity Institute (SANBI), a statutory body responsible for biodiversity conservation across the country. SANBI manages 11 National Botanical Gardens nationwide, including the National Zoological Garden, with the Walter Sisulu National Botanical Garden being one of only two located in Gauteng.
Established in 1982, the garden is best known for its dramatic 70-metre Witpoortjie Waterfall, widely regarded as the source of the Crocodile River. Beyond its scenic appeal, the garden houses a rich collection of plant species gathered from across South Africa, reflecting decades of dedicated botanical research and conservation work. Its conservation footprint extends beyond its boundaries into the broader West Rand region. Of particular significance is its role in protecting Brachycorythis conica subsp. transvaalensis, commonly known as the Albertina Sisulu Orchid. This rare orchid survives in only one known viable wild population, making the garden’s conservation efforts critical to the species’ continued existence.
Education also lies at the heart of the garden’s mandate. Through its Biodiversity Education and Public Engagement directorate, the garden hosts curriculum-aligned workshops for teachers and learners, focusing on natural sciences and environmental awareness. These programmes aim to nurture an appreciation for biodiversity among young people while supporting educators with practical learning resources. SANBI welcomed the accreditation as a fitting acknowledgement of the garden’s long-standing contribution to conservation and society. The institute noted that the Walter Sisulu National Botanical Garden continues to serve not only as a sanctuary for nature, but also as a space for learning, reflection and social relaxation.
The Level II accreditation affirms the garden’s role in tree conservation and botanical excellence, placing it firmly on the global map while reinforcing its importance within South Africa’s biodiversity landscape.
