Sununu is an AI-powered irrigation platform designed to overcome extreme evapotranspiration, poor soils and system-scale vulnerabilities in giga-scale greening projects across arid regions. It uses sensor data and LoRaWAN connectivity to predict optimal irrigation timing and flag system failures in real time. Field trials in the Saudi desert showed improved plant growth and water efficiency. Sununu enables precision management of large-scale desert rehabilitation, supporting food, water and climate resilience across the Arab world