A smart irrigation system using IoT automates watering by using sensors that track soil moisture, temperature, humidity, and weather forecasts. These sensors send data to a central controller, which turns water valves on or off based on the real-time needs of plants. This system reduces water waste and avoids overwatering or underwatering. Farmers and landscape managers can control irrigation remotely using mobile apps. By using IoT, these systems increase crop yield and promote sustainable water use. It’s an eco-friendly solution that saves time, money, and resources.