How to Grow Thyme: Planting, Care, and Harvesting

Nov 03, 2026by David Schulze

Thyme (Thymus vulgaris) is a compact, evergreen perennial herb with tiny aromatic leaves and a warm, Mediterranean flavor that suits sauces, stews, vegetables, salads, and bread. It thrives in sunny, dry spots, doubles as a low edging or ground cover, and its tiny flowers are edible too, adding color scattered over salads.

When to Plant Thyme

Thyme is slow and uneven to start from seed, so give it a head start by sowing indoors 8 to 10 weeks before your last frost date. Direct sowing works too, once the soil has warmed to about 70°F and all danger of frost has passed. Germination can take 14 to 28 days, and uneven emergence is normal, so be patient.

How to Plant Thyme Seeds

The seeds need light to germinate, so sprinkle them thinly over the surface of moist seed-starting mix and barely press them in rather than burying them. Keep the mix warm and gently moist, then thin or pot up the seedlings and set them out after hardening off. Choose a spot in full sun with light, well-drained soil; poorly drained ground, especially over winter, is the most common cause of thyme failure. If your soil is heavy or stays damp, grow thyme in a container or raised bed instead. Space plants about 9 to 12 inches apart for good airflow.

Caring for Thyme Plants

Once established, thyme is drought tolerant and rarely needs watering beyond prolonged dry spells; keep it on the dry side, since wet roots rot easily. Fertilize sparingly, if at all, as excess fertility produces weak, sprawling growth and dilutes the aromatic oils. Trim plants lightly in mid- to late spring and again soon after flowering to keep them compact and bushy, and avoid cutting hard back into old wood, where stems may not reshoot. Older plants develop woody centers and are best renewed or replaced every few years.

Harvesting Thyme

Snip young shoots whenever you need them, harvesting just before flowering when the essential oils in the leaves are at their peak, and in the morning after the dew has dried for the best flavor. Regular harvesting keeps plants compact and encourages fresh growth. To dry thyme, hang sprigs in a warm, dark, well-ventilated place for a few weeks, then store the leaves in an airtight jar.

Frequently Asked Questions

Why is my thyme plant woody?

Thyme plants naturally become woody with age. Trim them in spring to encourage young, tender stems, avoid cutting into old wood, and replace plants every few years when quality declines.

Can thyme survive winter?

Thyme is a frost-tolerant evergreen perennial, and established plants usually come through winter well. The bigger risk is wet, cold soil, so make sure thyme sits in free-draining ground or a pot with good drainage.

What parts of thyme can I use?

The leaves are the classic seasoning for savory dishes, and the tiny flowers carry a similar flavor and look lovely scattered over salads. Leaves can be used fresh or dried for later use.