When to plant or sow Thyme?

Thyme thrives in full sun and well-drained soil, making it ideal for sunny borders, rockeries, gravel gardens, or containers. It tolerates sandy, chalky, and loam soils but abhors waterlogging, so excellent drainage is essential. If your soil is heavy clay, work in plenty of grit or sharp sand before planting, or grow thyme in raised beds or pots filled with a gritty, free-draining compost. Plant thyme in April, May, or September when the soil is workable and temperatures are mild. Space plants 25 cm apart to allow for their spreading habit, which typically reaches 20–40 cm across. Dig a hole slightly larger than the root ball, set the plant at the same depth it was growing in its pot, and firm the soil gently around the roots. Water in lightly after planting, but avoid saturating the soil. If planting from seed, sow thinly on the surface of moist, gritty compost in spring, as thyme seeds need light to germinate. Keep at around 15–20°C and transplant seedlings once large enough to handle, hardening them off before planting out after the last frosts. After planting, water sparingly until the plant is established—thyme is drought-tolerant once its roots have settled in. A thin layer of gravel or grit mulch around the base helps suppress weeds, improves drainage, and reflects heat, which thyme appreciates. Avoid organic mulches like compost or bark, which retain moisture and can encourage rot. Thyme is hardy to zone 5a and evergreen in our climate, so it will provide year-round interest and foliage for picking.