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Thymus serpyllum

creeping thyme

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This creeping herb quickly forms a dense, aromatic carpet that works just as well between paving as it does spilling over the edge of a sunny border. Tiny, dark green leaves hug the ground on wiry stems, releasing a gentle fragrance when brushed or stepped on, making it a great choice for paths and informal planting.

Through summer, Thymus serpyllum comes alive with clusters of small, pink to purple flowers that sit just above the foliage, drawing in bees and butterflies and adding a soft wash of colour.

This is a tough, drought-tolerant plant that thrives in full sun and well-drained soil, coping happily with poorer conditions where others might struggle. Ideal for rockeries, gravel gardens or filling gaps in paving, it keeps things neat, low and easy to manage while still offering plenty of seasonal interest and wildlife value.

How to care for Thymus serpyllum:

Thyme thrives in full sun and well-drained neutral to alkaline soil, making it ideal for rock gardens, pathways, or as ground cover. When planting, space the plants about 20-30cm (8-12in) apart to allow them to spread unhindered. It prefers poor to moderately fertile soil, so avoid enriching the planting hole with too much compost or fertiliser.

Water regularly until the plants are established, but once settled, they become more drought-tolerant and require less irrigation. Trim back lightly after flowering to maintain a neat appearance and to encourage dense growth. If the plant becomes woody, prune more severely in early spring to rejuvenate the plant.

Ensure good air circulation around the plants to prevent fungal issues, and avoid overwatering, especially in winter.

Sowing instructions:

Surface-sow in pots or trays filled with barely moist seed compost and cover with a sprinkling of finely sieved compost. Place in a propagator at 15-20°C (60-70°F) until germination, which usually takes up to 24 days.

Pot on when large enough to handle and harden off before planting at 25cm (10in) intervals outside in late spring or early summer. Keep plants well trimmed to allow the new growth (which has the best flavour) to come through.
Flowering period:
  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
Eventual height:
0.1m
Eventual spread:
0.2m
Position:

Full sun

Rate of growth:

Average

Soil:

Moderately fertile, moist, well-drained soil

Hardiness:

Fully hardy

Product options

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SD30001483
approx 200 seeds
£2.99
available to order from late spring
Unavailable
1
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Seed Packets (only)£2.99
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