Iran has a variable climate that results in the growth of numerous plant species such as medicinal plants. More than 8000 plant species grow in Iran so that in the world is the reservoir of medicinal and aromatic plants. Medicinal plants are one of the most valuable resources in Iran which if detected, cultivated and utilized correctly, have a significant effect on public health, creating jobs and non-oil export. Due to the ancient Persian culture in use of plants, we can use the status of medicinal plants in order to achieve economic development based on environment, replacement of herbal medicine instead of chemical medicine, creating jobs in low exploitation agricultural land and foreign exchange, food security and protection of genetic resources. Unfortunately, due to the role of medicinal plants in the global economy, Iran's share in export of medicinal herbs despite of biodiversity of plants, climate variability, cheap energy and labor are scarce. Many research has revealed that Echinacea angustifolia (narrow-leaved purple coneflower), Hypericum perforatum, Echium amoenum, Thymus vulgaris– (common thyme), Astragalus microcephalus and tragacanth (a natural gum obtained from the dried sap of several species of Middle Eastern legumes of the genus Astragalus) and Cuminum cyminum (Cumin) are economic and high production medicinal plants in Iran. Saffron (Crocus sativus) is the most valuable plants in the world which is used in pharmaceutical and food processing . Iran, with annual production of more than 280 tons and a share of more than 94% of the world, is the largest producer and exporter of this product in the world. Iranian saffron is more desirable than saffron rival countries, then this product can have a huge foreign exchange for the country but because of the difficulties in marketing, packaging and exporting this product in terms of trade still has not found its rightful place in the world. Iran is a perfect place for investment and has a comparative adva
