Monitor the height of the plant during the growing season. Identify the time when your plant reaches 6 inches high. Expect to wait 60 to 90 days from the time you planted seeds or 30 days after transplanting, until the plant is ready for harvest.
Take your hand and gently surround a selection of leaves from the others growing in the clump.
Measure the selected leaves roughly 2 inches above the ground and cut the leaves at that point with clean, sharp scissors.
Allow the remaining leaves in the clump to continue to grow.
Repeat the cutting process three to four times, at regular intervals, during the course of the harvesting season.