Growing and Harvesting Saffron Crocus – Homegrown Spice

Saffron Crocus: Planting, Overwintering, and Harvesting

Saffron, the red-orange stigmas of Crocus sativus, flavors dishes worldwide. Hundreds of flowers needed for commercial amounts, but two dozen corms supply enough for a few memorable dishes first year. Corms multiply yearly; after 4–6 years, divide and replant after foliage fades to prevent overcrowding.

Planting Saffron Crocus Corms

In hardy zones (USDA 6–8 South, 6–9 West), plant corms as soon as received. Full sun, well-drained soil moderately rich in organic matter. Site should be relatively dry in summer dormancy. Plant 4 inches deep, 4 inches apart. If rodents problematic, plant in containers or line bed with hardware cloth. Flowers appear 6–8 weeks after planting (occasionally 2nd fall). Bloom lasts ~3 weeks. Grass-like leaves emerge with flowers or soon after, sometimes wait until spring. Leaves persist 8–12 weeks, then vanish. Mark planting area to avoid accidental digging.

Overwintering in Cold Climates

In zones colder than 6, lift corms after first few frosts but before ground freezes solid. Place in wooden crate/plastic tub, cover with dry peat moss or sand. Store cool (40–50°F), dry (basement). Replant in spring after frost danger, but don't water until new growth in early autumn.

Alternative: Plant corms 2 inches deep in clay/plastic pots with well-drained mix, sink pots in ground with rims 2 inches below soil. After dieback, move pots to basement, store dry. Set out next spring. Mark pot locations.

Harvesting and Using Saffron

Three stigmas per purple cup-shaped bloom. Best harvest mid-morning on sunny day when flowers fully open and fresh. Pluck stigmas with fingers, dry in warm place. Store in closed container. To use, steep threads in hot liquid (water, broth, milk) ~20 minutes. Add threads and liquid early in cooking; they continue releasing color and flavor.