Five Element Aromatherapy: The human relationship to the cycles of the day, seasons and moon were of vital interest to traditional Chinese healers and, through this, the "five element theory" became a fundamental part of traditional healing and a way of life. These five elements were associated with the equinoxes and solstices to help farmers plan ahead and organize their agricultural cycles. The calendar was arranged by naming the elements: wood for the spring equinox, fire for the summer solstice, metal for the autumn equinox and water for the winter solstice. The fifth element, earth, was at the centre of the calendar to signify Indian Summer and the transition time between all the seasons.