Materials:
You will need 2 liter bottle, thick string or yarn (either cotton or poly seems to work), a screwdriver, hammer, and a sharp blade to cut the bottle.
Cut the bottle in half
Use a screwdriver and a hammer to punch a hole in the center of the bottle cap
Cut a length of yarn/string about 1'-1.5' long, double it over and tie a loop on one end.
Thread the yarn/string through the hole in the bottle cap so that the knot is on the inside of the cap. This will act as a wick, drawing water up from the basin below and into the soil. The plant will take only what it needs, so the soil moisture will be perfectly regulated.
Put the cap back on the bottle top and nest the top of the bottle in the base. As the plants grow and use up the water, you can just lift off the top to add more to the base instead of pouring it over the soil. As the soil dries, water will be sucked up through the string into the pot.
Please label your bottle with your name and bring it to class for May 26. We will plant the seed and put soil in when your bottle when it arrives to school!
