This book contains detailed information including experimental protocol to design a research work on herbs. This book discuss the significance of extrinsic factor i.e. season which not only affect the growth of herbs but also affect the production of useful secondary metabolites. The book describes how a protocol needs to be evaluated before finalization. It also includes the role of basic analytical tools to produce significant results. The book also discuss the benefits and impact of such research work on maximum utilization of plants for their secondary metabolites as well as therapeutic benefits.