For day, winter use harvest leaves before flower buds open. Pick seed heads as color changes from green to brown or gray. Drying Dry herbs thoroughly before storing. High moisture content herbs as mint and basil need rapid drying or they will mold. Provide adequate, dust-free air circulation around drying herbs by spreading leaves on screens or cheese cloth.
Seeds take longer to dry.
Place heads on cloth, paper, or hang in paper bags. When partially dry, rub gently to remove dirt, hulls, etc. Spread clean seed in thin layers of clean cloth or paper until thoroughly dry. For quick drying, care must be used to prevent loss of flavor oils and color. Clean and blot leaves dry before placing in material.