Self watering hanging basket. The link shows putting a small pot in center and filling with water but I like the water bottle idea shown in illustration.remember to line bottom with plastic bag (between the soil and fiber or moss) - Gardening For Life
Drip irrigation- I do this every year and it works great! Especially during a long Texas drought- less water waste. The only thing that kept my plants going, and once the plants get growing they hide the bottle.
5 vegetable types that can be grown upside down ~ When you have limited space to garden, add a hanging vegetable garden with vegetables grown upside down. What can be grown upside down? Read here to learn about vegetables for an upside down garden.