The optimal time to harvest this vegetable depends on which part of the plant is desired. Bulbs are typically ready for harvest in the fall, after they have swelled to a usable size, usually around that of a tennis ball or slightly larger. Harvesting seeds occurs when the flower heads have dried and turned brown. Fronds, the feathery leaves, can be harvested throughout the growing season as needed.
Understanding the correct timing for harvesting this crop ensures the best flavor and texture. A bulb harvested too early might be small and lack its characteristic anise flavor. Allowing the seeds to fully mature guarantees a higher yield and potency of flavor. Regularly harvesting the fronds encourages continued growth of the plant and provides a constant supply of fresh herbs.