The potency of active principles in herbs is influenced by direction of movement of the sun in different seasons. Herbs with cold potency (souamya or sheeta) or mild actions shall be collected in cold seasons. Those with hot potency (agneya) shall be collected in the hot season. [Su.Sa. [[Sutra Sthana]] 36/6]<ref name=Susruta/> | The potency of active principles in herbs is influenced by direction of movement of the sun in different seasons. Herbs with cold potency (souamya or sheeta) or mild actions shall be collected in cold seasons. Those with hot potency (agneya) shall be collected in the hot season. [Su.Sa. [[Sutra Sthana]] 36/6]<ref name=Susruta/> |