The practice of growing plants without soil is called hydroponics. In hydroponics, plants are cultivated in nutrient-rich water solutions, which can provide all the essential nutrients they require for growth. This method allows for a more controlled environment, optimizing factors such as water, light, and nutrients, resulting in faster plant growth and potentially higher yields compared to traditional soil-based cultivation. Hydroponics is increasingly popular for growing a variety of crops, particularly in urban farming and areas with limited arable land. It also offers the potential for sustainable agriculture by using less water than conventional methods.