Saffron Crocus (Crocus sativus)

🌱

☀️

Sunlight Full sun to partial shade; requires direct sunlight in spring to ripen corms after flowering

💧

Watering Water moderately during active growth; avoid waterlogging to prevent corm rot

🌡️

Temperature Hardy to -10°C; dormant in summer heat, requires cool autumn temperatures to trigger blooming

🔍

Leaf: Narrow, grass-like dark green leaves with a central white stripe, emerging after flowering
Flower: Pale to deep purple funnel-shaped blooms with three vivid red stigmas (saffron threads)
Corm: Small rounded underground storage structure with a papery protective tunic

🛠️

Watering

Keep soil slightly moist during leaf growth phase after flowering

Fertilization

Apply balanced diluted feed once after flowering to support corm development. Use low-nitrogen feed to promote corm strength rather than leaf growth

Eggshell powder topdressing：Crush dried eggshells into fine powder; dust lightly over soil surface in spring to add calcium without causing root burn

Pruning

Remove yellowed leaves only after they die back naturally to avoid damaging the corm
Deadhead spent blooms to redirect energy to corm growth instead of seed production
Lift and divide overcrowded corms every 3–4 years during summer dormancy to maintain blooming vigor

⚠️

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported adverse effects from ingestion

Humans: No known toxicity to humans; saffron stigmas are safely used as a culinary spice

📖

Culture: Saffron stigmas symbolize luxury and healing in many global traditions

Usage: Culinary spice (world's most expensive spice by weight), ornamental garden plant, historical medicinal herb