Thymus pulegioides aka Large Thyme

Thymus pulegioides is a small, evergreen subshrub in the mint family. Common names include broad-leaved thyme and greater wild thyme. Its native range spans Europe and reaches northwest China. It is native to Britain and Ireland. Wild plants grow in grassland, on hills, and beside roads. They also grow on rocky ground and sandy sites. Some wild stands occupy dry grassland over lime-rich soil.

This woody perennial forms a low mound or spreading mat. Garden plants often reach 0.7–1 foot [0.2–0.3 metres] tall and wide. RHS size bands allow up to 1.6 feet [0.5 metres] each way. Its small green leaves have a strong scent. They grow in opposite pairs and have smooth edges. Leaf shapes range from narrow to oval. Dark green leaves may show red spots along their edges. The reddish stems have square cross-sections and hairy edges.

Small flowers rise above the leaves on upright spikes. Their colour ranges from lilac-pink to rose-purple. RHS places flowering in early summer; NC State gives July and August. Each tubular flower has two lips and a hairy surface. The upper lip has a notch. The lower lip has three lobes. Four stamens extend beyond the flower tube. Bees and butterflies visit the flowers for nectar. Insects carry pollen between flowers. The dry fruit is a schizocarp with four seed-bearing chambers.

Grow this thyme in full sun with soil that drains well. Sandy or loamy soil suits it well. It prefers neutral to alkaline conditions and tolerates drought. Moist soil also suits it when excess water drains away. RHS rates its winter hardiness H5. NC State lists USDA zones 4–8. Care needs are low, with few serious pest or disease problems. Excess watering and poor drainage can cause problems. Deer and rabbits tend to leave it alone.

Use it along borders, in pots, or as groundcover. It also suits rock, gravel, cottage, and wildlife gardens. Divide plants in spring to make new ones. Take semi-hardwood cuttings from mid- to late summer. The edible leaves can flavour chicken and fish. Harvest culinary leaves before the flowers open. Leaf oil has uses in perfume, deodorants, and antiseptic products. Sources also record expectorant uses, but these are not treatment guidance. Plants For A Future lists no known hazards.