Short description on a container gardening system for dry areas based on walls with built-in growth boxes made of hollow concrete blocks and developed by a Swedish horticulturist in Botswana.
WINBLAD, U. SIMPSON-HERBERT, M. (2004): Box 5.4 Vertical gardens in Gaberone, Botswana. In: WINBLAD, U. ; SIMPSON-HERBERT, M. ; (2004): Ecological Sanitation - revised and enlarged edition. (pdf presentation). Sweden: 83. URL [Accessed: 08.05.2019]