It may sound strange but yes it is possible to grow your plants without the use of soil or liquid medium. The roots of the plant are left dangling in the air - a process referred to as AEROPONICS.
In an aeroponics system, plant cuttings or seeds are suspended mid-air in a growing chamber, as a mist of nutrient-laden water is continuously sprayed on the roots of plants. Aeroponics systems can be used anywhere, where environmental conditions such as temperature and humidity can be regulated. Sunlight is the primary light source, with some supplemental lighting.