This is a fabulous Kickstarter! Combines keyhole gardens , worm towers, and wicking beds. The sustainable and urban food production that I have seen in a while. Well done! -- GARDEN TOWER: Composting + 50 Plants = Fresh Food Anywhere.
PVC Pipe Planter Disney world does this! Lowes sells the 4 to round PVC pipe with holes already drilled. Purchase an end cap, fill with rock, soil, and plant. I will often put these in the center of a very large pot to stabilize, and add amazing heigh