Essential Oil Bearing Plants: Agro-techniques, Phytochemicals, and Healthcare Applications provides a unique, comprehensive view of the plants which produce these valuable products, exploring optimal plant production. Environmental factors such as genetic factors, geographical origins, cultivation locations, environmental conditions, and nutritional status influence their secondary components. Moreover, water variability, temperature, salt, and metal stresses significantly impact the growth, yield, and EO production of these plants by adjustment of anatomical, morphological, and biochemical development. This compilation increases the awareness of the essential oil plant species, their conservation, cultivation, and sustainable utilization. This deeper understanding of current science will aid in the efficient commercialization of products based on these plants, and will help identify knowledge gaps for future research.