How to make a Sub-Irrigated Planter. I'm not sure I would use a two liter plastic bottle though. Over time I would fear the plastic breaking down enough to poison the plant. Perhaps a wine bottle instead.
If you can spare any after basil from making pesto & other delicious dishes , here are some other good uses for the herb, BASIL: Rub crushed leaves on your temples to relieve headaches. Pour boiling water over basil leaves for a pain-relieving footbath.