Cut the water bottle in half.
Trim the top of the bottom half of the water bottle, about a half inch past the point where the water bottle starts opening back up after necking down.
Place the top of the water bottom upside down, into the bottom part of the water bottle, as shown below.
Place a few small stones in the bottom of the water bottle planter.
Fill the top half of the water with dirt, then place seeds on top of the dirt.
Cover the seeds with dirt. Place the top half of the water bottle into the bottom half, with the opening pointing down. Fill the bottom half with water. Now, you have a self-watering planter. All you need to do is keep the bottom part full of water! Don't forget to mark the type of seed planted.
