How to Dry Herbs at Home

Drying herbs at home is an effective way to preserve flavour, aroma, and therapeutic value from your garden throughout the year. Whether you want to use them in cooking or prepare your own herbal teas, drying herbs is simple and doesn’t require specialised equipment. With proper care during harvesting, drying, and storage, you can keep herbs potent for up to a year.

Harvesting Herbs for Drying

While you can harvest herbs at any point during the growing season, timing makes a difference to the quality of the dried product. The best flavour is obtained from fresh, young growth—before the plant begins to flower. Once herbs flower, many develop a bitter taste or lose their aromatic intensity.

The ideal time to harvest is in the mid-morning, after the dew has dried but before the sun becomes too strong. This ensures the plant’s essential oils, which give herbs their scent and flavour, are at their most concentrated. When cutting leafy herbs like mint, oregano or parsley, use clean, sharp scissors or secateurs and cut just above a leaf node. This encourages the plant to grow back more vigorously. Avoid removing more than one-third of the plant at once, and always discard any dead, diseased, or insect-damaged leaves.

For flowering herbs such as lavender, borage and chamomile, pick the flowers just as the buds are beginning to open. If you’re harvesting herbs for their seeds - such as fennel, coriander, or dill - wait until the seed heads start to turn brown but harvest before they scatter naturally. Annual herbs can be harvested until the first frost, while perennials should not be cut beyond late August, as trimming too late in the season may lead to new growth that will be damaged by cold weather.

Preparing Herbs for Drying

After harvesting, it’s important to prepare herbs properly to prevent mould and ensure good flavour retention. Gently rinse them in cool water if they are dusty or have insect debris, then shake off the water and pat dry with a clean towel. Herbs with a high essential oil content, such as thyme, sage, or rosemary, are often better not washed at all, provided they’re clean, to avoid losing aromatic compounds.

Once dry, strip off the lower leaves from the stems and gather the herbs into small bunches. Secure each bundle with string, twine, or elastic bands. Elastic is ideal because it tightens as the stems shrink. Keep the bunches small enough to allow air to circulate between the stems, which helps prevent moisture buildup.

Air-Drying Herbs

Air drying is the most traditional and low-energy method. Hang the prepared bundles upside down in a warm, dry place with good air movement. Avoid kitchens or bathrooms, as these spaces are often humid and can introduce unwanted moisture. A shaded location out of direct sunlight is best, as sunlight can degrade colour and flavour.

To protect herbs from dust and insects, cover the bundles loosely with a paper bag or a piece of muslin. Punch a few holes in the bag to allow air to circulate. You can also dry individual leaves or flowers by spreading them in a single layer on a mesh screen or an old picture frame covered with muslin or cheesecloth. Herbs typically dry within three to fourteen days, depending on humidity levels and the herb’s moisture content. They are ready when the leaves feel crisp and crumble easily.

Using a Dehydrator or Oven

A food dehydrator is a more controlled and efficient method, particularly useful if you’re drying large amounts of herbs or working with high-moisture herbs like basil or mint. Arrange herbs in a single layer on the trays and set the dehydrator to a temperature between 35°C and 45°C. Drying usually takes one to four hours. Check the herbs regularly and remove them once they are brittle.

Oven drying is another option, although less gentle. Spread herbs in a single layer on a baking sheet lined with parchment paper and set your oven to the lowest possible temperature, ideally under 50°C. Leave the door slightly ajar to allow steam to escape and turn the herbs occasionally to ensure even drying. Herbs dried in the oven are usually ready within a few hours.

Storing Dried Herbs

Once herbs are fully dry, strip the leaves from the stems and store them either whole or lightly crumbled. Whole leaves retain more flavour and can be crushed as needed. Store your dried herbs in airtight glass jars or containers with tight-fitting lids. Label each container with the herb name and the drying date.

Keep the jars in a cool, dark, and dry place—away from sunlight, heat sources or humidity. A kitchen cupboard or pantry shelf is ideal. Check the herbs periodically for any signs of mould. If you detect any musty odour or visible mildew, discard the contents immediately. Properly stored dried herbs will remain usable for about six to twelve months, though they are most flavourful within the first six months.