The world's most expensive spice by weight, derived from the dried stigmas of the saffron crocus. Each flower produces only 3 stigmas, requiring approximately 150,000 flowers per kilogram of spice.
Best soil types: sandy loam, calcareous, well-drained
pH range: 6 - 8 (optimal: 7)
Drainage: excellent
Use to identify issues early and prevent crop losses.
Harvest stigmas the morning flowers open — use tweezers to pluck the three red stigmas from each flower, then dry at 40-50C within hours.
Saffron is labor-intensive: one hectare requires 300-400 person-hours for the 2-3 week autumn harvest window; plan labor availability accordingly.
Corms multiply underground and should be lifted and divided every 4-5 years; replant only corms larger than 2.5 cm diameter for best yields.
Saffron typically takes 180 days from planting to harvest. Seeds germinate in about 14 days. The best planting season is summer.
Saffron grows best in sandy loam, calcareous, well-drained soil with a pH of 6-8. Excellent drainage is required.
Saffron grows best at 15-25°C. Frost tolerance: moderate. Heat tolerance: moderate.
Saffron yields approximately 8 kg dried saffron/hectare under good conditions.
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