Saffron - The history and culture of saffron, harvested from fall-flowereing crocus sativus. - http://www.cob.montevallo.edu/macksre/saffronsite.htm
The Crocus - Discussion of different varieties of crocuses and planting considerations, by Brian Baldwin. - http://gardenline.usask.ca/misc/crocus.html
Better Homes and Gardens:Crocus Flowers - The early birds in the spring garden! Small, egg-shaped blooms create a blanket of color. Beautiful colors that range from blue and purple to bright yellow will make your garden stand out. - http://www.bhg.com/home/Crocus-Flowers.html