Fertilizer prices driven by Russia’s invasion of Ukraine led a number of farmers around the world to consider or reconsider non-chemical alternatives.  For some years now, family farmers in Kenya’s Kisumu area have replaced chemical fertilizers with organic ones. Organic fertilizers do more than cut input costs and increase resilience to fluctuations in global market prices.  They also help address poor soil quality and inadequate water supply—increasingly important as climate change intensifies drought and other conditions that reduce agricultural output and income. One organic fertilizer used by farmers in Kisumu are cover crops, or “green manure.” Common cover crops in Africa include glyricidia sepum, piliostigma reticulatum, calliandra, canavalia insiformi, and different types of legumes.