More to explore:
Green Roof Growers: Let’s Make 2-Liter SIPs! Urban gardening idea from http://greenroofgrowers.blogspot.com
Preparing for Hard Times: Plastic Soda Bottles Self watering plant pot
Self watering container out of pop bottle... do with wine bottles?
2 liter bottles into sub irrigation planters! Collection of cool and unique DIY projects from all over the web
containers for plants | Here's how to set up your Self Watering plastic bottles! Your kids can ...
2 liter sub irrigated planter... Maybe this will help me keep plants alive.