Raising agricultural productivity remains a major challenge in developing countries. Farm productivity is especially low in Sub-Saharan Africa, where fertilizer use lags far behind the rest of the world. Identifying effective strategies for raising fertilizer use in Africa has been a longstanding policy priority. While most of the region has struggled to raise fertilizer use in a sustainable manner, several countries have recorded impressive steady growth in fertilizer use, suggesting that there may be important success stories from which to learn.