Cultivation of fruit trees on farms can contribute to household food security especially during non-harvesting seasons and when crops have failed. Fruit tree cultivation provides nutrient-rich foods for increased dietary diversity and also diversifies farm income generation options. However, there is insufficient data on diversity of fruit trees on farms and their contribution to food security in Kenya. This information is needed for designing and implementing suitable, location-specific interventions on increasing production and consumption of fruits. Objectives of the study: (a) Document fruit tree richness and abundance on farms in Western Kenya. (b) Assess food security levels on the same farms and identify relationships between food security and fruit tree species richness and abundance (if any).