Hydroponics entails growing plants without soil. Plants are placed in a liquid solution and supplemented with a liquid fertilizer and grown to maturity with out any soil around the roots. There some commercial vegetable growers that use hydroponics to produce fresh vegetables, like tomatoes, and deliver them to supermarkets all year around. The tomato plants are held upright by a mesh like fabric at the base of the plant and the roots are visible growing in the tanks of water below. Just imagine a fish tank with roots in the water and vegetative growth on top of the water.

Home grown vegetables like lettuce, tomatoes. peppers, cucumbers, radishes and herbs are good candidates for hydroponic gardens. I know there are websites that describe the process of starting a hydroponic garden or even how to grow an individual house plant hydroponically. Hydroponics could be a great hobby with the reward being fresh vegetables from your own pots or tanks.