The term for plants that grow without soil is "hydroponics." Hydroponics is a method of cultivating plants in a nutrient-rich water solution, allowing the roots to absorb essential minerals directly. This technique can be applied in controlled environments such as greenhouses or indoor farms, where factors like pH, light, and temperature can be optimized for plant growth. Hydroponics offers numerous advantages, including faster growth rates, reduced water usage, and less reliance on pesticides. It also allows for cultivation in locations where traditional soil-based agriculture may not be feasible.