Hydroponic refers to a method of growing plants without soil. Instead, plants are placed in water with added nutrients to help them grow. Full definition
Worms (and their poop) are amazing things to behold, even more so when they are involved in food - growing hydroponic systems. (treehugger.com)
Learn the easy ins - and - outs of hydroponic gardening. (amazon.com)
We've seen the amazing power of urban aquaponics (the practice of combining fish farming with hydroponic growing) before, but here's how one commercial grower is getting past a very specific problem — the high pH of her well water. (treehugger.com)