How to plant saffron corms How to plant saffron corms: In areas where Saffron Crocus is reliably hardy—USDA Zone 6 through 8 in the South, 6 through 9 in the West—you should plant the corms as soon as you receive them. [caption id="attachment_16394" align="aligncenter" width="663"] How to plant saffron corms[/caption] Saffron Crocus does best in full sun and well-drained soil that is moderately rich in organic matter. Ideally, the site...