In which places saffron is grown and which country is the largest producer?

Saffron is considered as an autumn flowering plant, perennial in nature. The eastern Mediterranean climate is believed to be the best for growing saffron because this plant  descends from that place. Other places which are suitable for saffron cultivation are Eurasia, Iran, Spain, India and Greece. Iran is considered to be the largest producer of saffron in the world accounting to 94 % of the total production.