How Do I Dry Lavender for Long-Lasting Fragrance?

Dried lavender that retains its scent and colour for a year or more is not difficult to produce — but it requires attention to three specific factors: harvesting at the right stage, drying in the right environment, and storing correctly once dry. Lavender dried too slowly in a humid space turns brown and loses most of its essential oil before the drying process is even complete. Lavender dried quickly in a warm, airy, dark space retains the vivid purple colour and the intense fragrance that makes it so valuable for sachets, pot-pourri, culinary use and natural moth deterrents.

Preparing bunches for drying

Divide the harvested lavender into small bunches of 10 to 20 stems. Small bunches dry faster and more evenly than large, dense bundles where the inner stems remain damp and at risk of mould. Secure the base of each bunch tightly with a rubber band rather than string or twine; as the stems dry and shrink, the rubber band contracts with them and maintains the grip, whereas string remains loose and the bunch falls apart. Trim the stem ends to a uniform length for a neater appearance.

The ideal drying environment

Hang bunches upside down in a warm, dark, well-ventilated room or shed. A warm utility room, attic, barn or garden shed with good airflow is ideal. The temperature should ideally be between 20°C and 30°C. Good airflow is more important than heat alone — still, humid air slows drying and encourages mould even at warm temperatures. Hang the bunches with space between each one so air can circulate around every stem.

How long does drying take?

Small bunches in a warm, airy environment are typically fully dry within one to two weeks. Test by feeling the stems — they should be stiff and snap cleanly rather than bending. The flower heads should feel crisp and papery rather than soft or slightly flexible. If in doubt, leave for another few days; under-dried lavender stored in a closed container develops mould rapidly.

Storing dried lavender

Store dried lavender bunches in a cool, dark location — a cupboard, box or paper bag. Avoid plastic bags, which trap residual moisture and accelerate fragrance loss. For sachets and pot-pourri, strip the dried florets from the stems and store in an airtight glass jar; this concentrates the fragrance and the jar contents can be refreshed with a few drops of lavender essential oil when the natural scent diminishes. Properly stored dried lavender retains good fragrance for twelve to eighteen months.

Culinary drying

For culinary use, dry lavender using the same method but ensure the variety is culinary-appropriate — Lavandula angustifolia is the preferred culinary lavender as it has the sweetest, least camphor-heavy flavour. Avoid French or hybrid lavenders for cooking as their higher camphor content makes them harsh and medicinal-tasting in food. Use the dried buds in very small quantities — lavender is powerful and a little goes a long way.