Rainforest Hydroponic System
Hydroponic gardening uses less water and fertilizer than traditional
soil gardening because the water in the system is reused. General
Hydroponics boasts a wide catalog of hydroponic systems and supplies,
but I tried out the Rainforest 318, which was the perfect size and
arrangement for my teeny rooftop herb garden. It has reconfigurable
plant trays to accommodate different-sized plants. My favorite part?
No potting soil to lug onto the roof!
About $250, varies by retailer
Find out where to buy at generalhydroponics.com