Soil: Choose deep, well-drained sandy loam or loam. Deep plow 25–30 cm and apply ample decomposed organic fertilizer.
Temperature: Optimal germination temperature is 16–26°C, promoting fast and even emergence.
Sowing: Drill or broadcast, cover with 1–1.5 cm of soil, keep moist. Seedlings emerge in about 7–14 days.
Thinning: Thin at 2–3 true leaves; final thinning at 4–5 true leaves to 8–10 cm spacing.
Water & Fertilizer: Keep soil moist during growth. Ensure adequate water and fertilizer during root expansion; reduce water late to prevent cracking.
Harvest: Ready in about 95–105 days when roots are fully swollen and brightly colored.