Premier Oregano Oil features the essential oil of oregano derived from the leaves and flowers of the Oreganum vulgare, the true oregano species. Origanum vulgare is a perennial herb and a member of the mint family, lamiaceae, native to Western and Southwestern Eurasia and the Mediterranean region. The plant grows up to 3 feet high, with dark green leaves and a majestic purple flower. It can take up to 100lbs of oregano plants to make 1lb of the essential oil of wild oregano. The oil of oregano is high in phenolic compounds such as carvacrol, making this concentrated natural oil very powerful.