AdvertisementThese 5 Crops Are Still Hand-Harvested, And It's Hard WorkSeptember 01, 2014Eliza BarclayfacebookEmailAt left, a woman holds the saffron crocus during the saffron harvest in Herat, Afghanistan. At right, saffron flowers are collected in Saint Hippolyte, eastern France. Since the stigmas need to be picked from the flowers by hand, saffron is the world's most expensive spice. (Majid Saeedi/Getty Images; Maxppp /Landov)