Lavender in Containers
Plant lavender in a container made from a material that breathes, such as terra-cotta. Repot to a larger container every spring to allow the plant to reach its full blooming and growth potential.
Use a sterile potting mix, or try this one from V. J. Billings, owner of Mountain Valley Growers, an organic nursery in Squaw Valley, California: Mix approximately 60 percent peat moss with 40 percent perlite, with a couple of handfuls of homemade compost thrown in. If you don't add compost when you pot, you'll need to fertilize every three weeks or so with a diluted fish or seaweed emulsion.
5 steps to perfectly dried lavender