Tarragon, bay, mint, lavender, rosemary, lemon balm and lobular herbs, such as thyme, suitable for air drying. Twigs or branches are bundled for adequate ventilation. Large, dense bundles can form mold and discolored leaves. Dry the branches, leave them down, and loosely wrap them in a fine cloth or tissue bag to prevent dust and falling leaves or seeds. Do not use plastic bags, which can promote the development of mold.
The drying time depends on the size and humidity of the branches. On average, seven to ten days are allowed. The goal is to remove 70% of the water content; when crushed, the leaves should sound like cornflakes.
You can also dry herbal seeds such as fennel, parsley, coriander and parsley. The Seed head is unevenly mature; once most of the head is brown, harvest with about 2 feet of stem or as long as possible. Bundle four to five and cover the head with a muslin or paper bag and hang them upside down.