Thyme

Thyme (Thymus vulgaris) is a low-growing, woody perennial herb in the mint family with small, intensely aromatic leaves and tiny pale-purple flowers beloved by pollinators. Originating from Mediterranean regions, it forms compact, branching bushes 20–30 cm tall that thrive in warm, sunny positions with well-drained, slightly calcareous soil. It is hardy to USDA Zone 4 and can overwinter outdoors in sheltered positions in Nordic gardens. Both fresh and dried leaves are a cornerstone of European and Middle Eastern cooking.

Growing

Start seeds indoors 8–10 weeks before planting out, sowing at 0.3 cm depth in light, well-draining seed compost. Germination occurs in 7–21 days once the growing medium is consistently warm. Prick out seedlings into individual pots once two true leaves appear. Transplant outdoors once nights stay reliably above 5 °C, spacing plants 15 cm apart in rows 20–35 cm apart. Thyme can also be direct-sown outdoors once soil warms to at least 15 °C.

Care

Water sparingly — thyme tolerates drought and is sensitive to waterlogged soil. Feed lightly once at transplanting with a balanced fertiliser; avoid high-nitrogen feeds that dilute leaf flavour. Trim lightly after flowering to keep plants compact and productive. In Nordic gardens, protect plants with a layer of dry mulch once temperatures drop below freezing; in exposed northern locations, relocate container-grown plants to a cold but frost-free shelter for winter.

Harvest

Harvest soft shoot tips and young leaves once the plant is well established and beginning to produce new growth. Flavour is most concentrated just before the first flower buds open — this is the ideal harvest moment. Use clean scissors to cut stems back by up to one-third; do not cut into old woody growth. Repeat harvests are possible throughout the growing season until hard frost sets in.

In the kitchen

Use thyme fresh or dried to season meat, poultry, fish, shellfish, stews, soups, marinades, and roasted vegetables. It is a key component of bouquet garni and herbes de Provence. Whole sprigs can be added to braising liquids and removed before serving; stripped leaves work well in sauces, bread doughs, and compound butters. Thyme pairs well with lemon, garlic, and olive oil and also adds an unexpected note to fruit compotes and herbal teas.

Storing

Fresh-cut thyme keeps for up to two weeks wrapped loosely in damp paper and stored in the refrigerator. For longer storage, dry whole stems in a warm, airy spot away from direct light until crisp, then strip leaves and store in an airtight jar away from heat — dried thyme retains potency for up to two years. Leaves can also be frozen on a tray and transferred to sealed bags for up to six months.