This technology describes utilizing rooftop water harvesting facilities to increase the availability of water for domestic use and irrigation of backyard ntula/ eggplant (Solanum aethiopicum L.) gardens. This measure allows small-scale farmers to harvest rainwater from roofs and store it in tanks, ensuring ntula production also during the dry season, when it would be otherwise impossible. The combination of rainwater harvesting with other good practices (e.g. staking, mulching, manuring) helps increase productivity while reducing soil erosion, eventually strengthening the resilience of farmers from the impact of dry spells.