April 13, 2009 Updates worth reading. For Growing and Education Rather Than Decoration These sub-irrigation (aka "self-watering") planters are as good as any you can buy, make that better than you can buy...and they're free. T...More
April 13, 2009 Updates worth reading. For Growing and Education Rather Than Decoration These sub-irrigation (aka "self-watering") planters are as good as any you can buy, make that better than you can buy...and they're free. Think of them as "plumbing" for plants rather than decoration. Read much more about how to use and conceal them here. Made from repurposed (recycled) plastic pop bottles, they are both functional and educational. You can see exactly how sub-irrigation (capillary action) works as well as the status of the soil and root system. A 1 liter bottle planter is roughly equivalent to a 4" grower pot, the 2 liter planter close to a 6" grower pot in volume and a 3 liter planter in the range of a 6 to 8" grower pot. The first step is to remove the label. Fill the bottle with very hot water. I heat enough water (not to a boil) on the stove to fill two bottles. Wearing oven mitts, and using a funnel I fill the bottles in the sink. If the water is hot