Saffron crocus is the source of the yellow spice saffron, which comes from the red stigma
that is found inside the flower. Saffron has been used medicinally, in cosmetics, and in
cooking for hundreds of years. It grows best in areas with mild, rainy winters and hot, dry summers.
Saffron crocus is hardy in USDA hardiness zones 6 through 8; it must be planted in early fall
before the flowers appear and can be grown in full sun or light shade. You can see
saffron crocus in the Beverage Garden in the National Herb Garden.