More info at http://en.wikipedia.org/wiki/Lavender
Culinary use A bee on a lavender flower
Flowers yield abundant nectar from which bees make a high-quality honey. Monofloral honey is produced primarily around the Mediterranean, and is marketed worldwide as a premium product. Flowers can be candied and are sometimes used as cake decorations. Lavender flavors baked goods and desserts (it pairs especially well with chocolate), and is also used to make "lavender sugar".[9] Lavender flowers are occasionally blended with black, green, or herbal tea, adding a fresh, relaxing scent and flavour.
Though it has many other traditional uses in southern France, lavender is not used in traditional southern French cooking.[10] In the 1970s, a herb blend called herbes de Provence usually including lavender was invented by spice wholesalers,[11] and lavender has more recently become popular in cookery.
Lavender lends a floral and slightly sweet flavor to most dishes, and is sometimes paired with sheep's-milk and goat's-milk cheeses. For most cooking applications the dried buds (also referred to as flowers) are used, though some chefs experiment with the leaves as well. Only the buds contain the essential oil of lavender, from which the scent and flavour of lavender are best derived.
The French are also known for their lavender syrup, most commonly made from an extract of lavender. In the United States, both French lavender syrup and dried lavender buds are used to make lavender scones and marshmallows. [edit] Medicinal use
Lavender is used extensively with herbs and aromatherapy.
English lavender (Lavandula angustifolia) yields an essential oil with sweet overtones, and can be used in balms, salves, perfumes, cosmetics, and topical applications. Lavandin, Lavandula × intermedia (also known as Dutch lavender), yields a similar essential oil, but with higher levels of terpenes including camphor, which add a sharper overtone to the fragrance. Mexican lavender, Lavandula stoechas is not used medicinally, but mainly for landscaping.
Essential oil of lavender has antiseptic and anti-inflammatory properties. It was used in hospitals during World War I to disinfect floors and walls. These extracts are also used as fragrances for bath products.
According to folk wisdom, lavender has many uses. Infusions of lavender soothe and heal insect bites and burns. Bunches of lavender repel insects. If applied to the temples, lavender oil soothes headaches. In pillows, lavender seeds and flowers aid sleep and relaxation. An infusion of three flowerheads added to a cup of boiling water soothes and relaxes at bedtime. Lavender oil (or extract of Lavender) heals acne when used diluted 1:10 with water, rosewater, or witch hazel; it also treats skin burns and inflammatory conditions.[citation needed]
A recent clinical study investigated anxiolytic effects and influence on sleep quality. Lavender oil with a high percentage of linalool and linalyl acetate, in form of capsules, was generally well tolerated. It showed meaningful efficacy in alleviating anxiety and related sleep disturbances.[12]