Saffron slowly propagated throughout much of Eurasia and was later brought to parts of North Africa, North America, and Oceania. Saffron was detailed in a 7th-century BC Assyrian botanical reference compiled under Ashurbanipal. Documentation of saffron's use over the span of 3,500 years has been uncovered. Saffron-based pigments have indeed been found in 50,000-year-old depictions of prehistoric places in northwest Iran. The Sumerians later used wild-growing saffron in their remedies and magical potions. Saffron was an article of long-distance trade before the Minoan palace culture's 2nd millennium BC peak. Ancient Persians cultivated Persian saffron ("Crocus sativus" 'Hausknechtii') in Derbent, Isfahan, and
History of saffron the family Iridaceae, native to Greece and Crete. "C. cartwrightianus" is the presumed wild progenitor of the domesticated triploid "Crocus sativus" – the saffron crocus. Saffron is the triploid form of a species found in Eastern Greece, "Crocus cartwrightianus"; it probably appeared first in Crete. An origin in Western or Central Asia, although often suspected, has been disproved by botanical research. Saffron played a significant role in the Greco-Roman pre-classical period bracketed by the 8th century BC and the 3rd century AD. The first known image of saffron in pre-Greek culture is much older and stems from the Bronze Age.