Garden Supplies, Gardening Tools and Gardening Tips for Home Gardeners. Home Farming. How to Make a Hanging Herb Garden Using Recycled Soda Bottles. The idea of the hanging garden planter using a soda bottle came after my unsuccessful attempts at upside down vegetable gardening. One of my readers, Craig Stanton, left a comment saying that I should put the cap back on and grow the vegetables out of the top. That seems so obvious, but I didn’t think of it at all and they’re also easy to make.