Common thyme
Also known as
Garden thyme, English thyme, French thyme, Winter thyme, Culinary thyme
Keep this plant’s care guide close at hand.
Get the appAbout Common thyme
Thymus vulgaris, commonly called common thyme, is a hardy, woody, evergreen to semi-evergreen subshrub in the mint family (Lamiaceae). Native to the Mediterranean Basin, it forms low mounds 15–30 cm tall with wiry, square stems and small, opposite, narrow, gray-green leaves covered in aromatic glands rich in thymol and carvacrol. In late spring to early summer, short terminal spikes of pale pink to lilac flowers attract bees and other pollinators. Thyme thrives in lean, sharply drained, sandy or gravelly, calcareous soils and excels in rock gardens, edging, and containers. Highly drought tolerant once established, it dislikes humidity and winter wet more than cold. It is typically hardy in USDA Zones 5–9 when provided excellent drainage and some winter protection in colder regions. Valued both as a culinary herb and ornamental, it is deer-resistant and relatively pest free, though root rot and spittlebugs may appear in poorly sited plantings. Its low, aromatic foliage makes excellent groundcover between pavers and releases fragrance when brushed.
Taxonomy
Properties & Requirements
How to care for Common thyme
Water
Water newly planted thyme regularly for the first 2–3 weeks to establish, then let the top 2–3 cm (1 in) of soil dry before watering again. Established plants prefer deep, infrequent soakings; containers usually need watering when the pot feels light and the mix is dry halfway down. Always water at the base, not overhead, to reduce foliar disease. In winter, keep on the dry side and never leave roots sitting in saucers.
Light
Provide full sun: at least 6–8 hours of direct light daily outdoors. In very hot climates, brief afternoon shade is acceptable if mornings are bright. Indoors, place at a south-facing window or under grow lights delivering 300–500 µmol·m⁻²·s⁻¹ for 12–14 hours. Insufficient light results in leggy growth, poor flavor, and weak flowering. Rotate pots monthly to keep growth even, and keep foliage unshaded by nearby plants or structures.
Nutrients
Thyme prefers lean, mineral soils and needs little feeding. Over-fertilizing, especially with high nitrogen, reduces essential oils, flavor, and winter hardiness. At planting, mix a modest amount of compost into the backfill, then top-dress with grit. In containers, feed sparingly during active growth with a dilute, balanced or low-nitrogen fertilizer (e.g., 1/4 strength every 4–6 weeks). Avoid rich manures and cease fertilizing 6–8 weeks before expected frost to prevent tender growth.
Temperature
Best growth occurs with daytime temperatures of 15–27°C (60–80°F). Thymus vulgaris is hardy to about −15°C (5°F) with perfect drainage, typically USDA Zones 5–9, though protection is needed in wet, exposed winter sites. In hot summers, it tolerates heat if the soil is dry and air is moving; persistent humid heat can invite fungal problems. Avoid warm, wet winters—cold plus saturation is fatal. Overwinter containers in a cold, bright, well-ventilated spot.
