Hydroponics is a new technique of growing plants, without the need of soil. If you want to grow stuff, but you do not have a garden or even if you have, you probably don’t want to mess up with the soil, you can still cultivate your plants using Hydroponics.
The technique of hydroponics is becoming more popular among commercial farmers as land for growing is becoming shorter. Initially hydroponics was used to grow plants, vegetable, fruits and flowers, but it has got the attention of home gardeners as well, though at a small scale. The added advantage of hydroponics is that there is a much less chance of the plant getting affected by disease. I would say that hydroponics is the way to grow plants in future.