Grown to reproduce as closely as possible, conditions found their natural growing environment.
This increases the number & diversity of medicinal constituents.
Plants grown in an environment as natural as possible, in lean soil, without amendments & fertilizers exposed to the stressors of uneven water supply, insects & herbivores, competition for nutrients & space with other plants produce secondary metabolites to protect themselves & survive.
This produces smaller plants which are significantly more potent than the larger, cultivated and pampered monocrops which are commonly grown.
-"The Lost Language of Plants” - Stephen Buhnner
-The Chinese Medicinal Herb Farm: A Cultivator's Guide to Small-scale Organic Herb Production -Peg Schafer
-"The Raison d”Etre of Secondary Plant Substances” - G.S. Frankel, Science 129