Herbalists recommend lavender to treat migraines, ease digestive spasms, and for certain respiratory problems. Lavender is also used for soothing the nervous system, (see below directions for preparation as an infusion). Lavender is also used as a local anesthetic. It is applied as a compress directly on a cut, bruise or sprain. To make lavender decoction boil 3 tablespoons of flowers in 1 liter (or quart) for 10 minutes.