Fine lavender (avandula angustifolia), also called officinal lavender, is the only one officially recognized for its therapeutic virtues. Wild and precious, it is reproduced by seed in order to preserve its medicinal properties. The climate and the terroir are essential for the quality of this rare plant that grows in the Provençal mountains between 1,968 and 4,265 ft (600 and 1,300 m) of altitude and, in particular, on the Monts de Vaucluse between Mont Ventoux and the Montagne du Luberon.