According to the articles in this edition, even though indigenous and indigenised green leafy vegetables are often described as drought-tolerant crops, availability of water is a key issue in most areas in Africa, including most of South Africa. In many areas, irrigation is essential, if water is available. Very efficient indigenous irrigation systems have evolved in various parts of Africa. Much irrigation water can be saved by using water-saving indigenous irrigation systems such as the clay-pot system. The articles in this edition, although small in number, address a wide range of the issues raised thus far. For this reason, this edition provides an appropriate foundation for further research on leafy vegetables in South Africa and their linkages with water and human nutrition.