In simple terms, astrology is an ancient wisdom and body of information about how various planets influence our personalities, and it is used to forecast the future based on planetary placements. Nicholas Culpeper, a 17th-century herbalist, wrote many volumes that combined herbal therapy and astrology. Each plant was given a ruling planet. When looking at the planets, this form of association leads to essential oils for zodiac signs. When we formulate our zodiacal oils we go over each zodiac sign, its ruling planet, personality attributes, and then the essential oils that are best for that sign. Each of these oils was formulated so that you could be more in tune and resonate with the vibration and energies of your particular sign of the zodiac.