How to reduce water usage in a Rajasthan terrace garden?

Use wicking beds (50–70% water saving), drip irrigation with timers, 8 cm deep organic mulch, and shade cloth to reduce evaporation. Grow drought-tolerant crops: pomegranate, drumstick, okra, and cluster beans. Collect air cooler discharge water for irrigation — Rajasthan households save hundreds of litres daily this way.