Class for All Levels (1.5 hrs): When does an herb cease becoming merely a plant and becomes instead a useable botanical medicine within one or another of the systems of Western, Chinese or Ayurvedic medicine? Herbs are defined by their corresponding diagnostic system. Planetary herbology represents a practical way to utilize the energetic (function-oriented) diagnostic systems of Chinese and Ayurvedic herbal medicine with the use of herbs from around the world.