I have made a second planter that will sit next to my first one, and I'm ready to try a Sub-irrigated Planter (SIP) also wrongly known as self watering planter. You are thinking that I'm getting away from upcycling?! NEVER!
The principle of Sub-irrigation is fairly simple, you create pocket of air using pipes or milk jug at the bottom of your planter. This pocket of air have to have holes all around and don't have to be inter connected, one of these bottle or pipes need to have connection with the top of the planter so you can fill these pocket of air with water. In this example, a bottle of water makes this connection.
|To know more about SIP, Insideurbangreen is a great website.|
My planter will use trash bag to keep the bottom of the planter water proof, plastic bottle for the air pockets and a bottle of water for the connection with the outside world. You have also to determine the maximum amount of water you want in your planter by creating an overflow hole, usually around the top of the bottles (4 inches from bottom in my case).
|I drilled plastic bottles I was going to trash|
|I connected one clear bottle to use as a funnel later|
|This is how it looks like.You only need one funnel per planter|
|I interconnected some bottles (optional) because I didn't have the lid, you don't want soil to go inside the bottle too much.|