Saffron comes from a very beautiful lilac flower called Saffron crocus, that produces strings of this amazing herb. It is believed that it was cultivated in Greece or nearby. Strings of saffron are used in food as herb and as a natural colouring agent. People have been producing and trading saffron from way back as the 7th-century BC and s still one of the most expensive herbs when the price is calculated by weight. 90% of all the saffron nowadays is grown in Iran.