Thymus zygis aka White Thyme

Thymus zygis, or Spanish thyme, is a small evergreen subshrub. It belongs to the mint family, Lamiaceae. Its native range lies in the western Mediterranean. It grows in Spain, Portugal and northern Morocco. Dry, sunny hills form its natural habitat. Plants reach about 1 foot [0.3 metres] in height. Growth proceeds at a medium pace. Its low, woody form suits beds and ground cover.

The leaves have a strong scent and serve as seasoning. Spanish cooks use them in soups and stews. PFAF describes their flavour as stronger than common thyme. For drying, gather leaves just before the flowers open. The source suggests harvests in early and late summer. Dry the leaves quickly for later use. Fresh plants also supply material throughout the year. The evidence gives no species-specific leaf shape or flower colour.

The flowers supply nectar that draws honey bees. Insects pollinate them, and the plant is self-fertile. Each flower has both male and female organs. These traits give this small shrub value in pollinator beds. Its low growth also lends itself to ground cover. Grow it in full sun rather than shade. Choose light, sandy soil or a medium loam. It can grow in poor soil with few nutrients.

Good drainage matters more than rich soil. The plant accepts mildly acid, neutral and mildly alkaline ground. It favours soil that contains lime. It grows in dry or moist soil and withstands drought. Avoid wet ground, with extra care during winter. Gravel around the plant can keep foliage clear of wet soil. PFAF reports cold tolerance near 14°F, or −10°C. It also lists USDA zones 6–9. Winter cover may help; raised glass can shield the plant.

Growers harvest this species commercially for its essential oil. The leaves yield oil used in scent products and mouthwash. PFAF also records antiseptic, disinfectant and deodorant uses. These uses do not establish safe doses for home treatment. The same source lists no known hazards. Its leaves have a recorded food use as a condiment. That does not establish the safety of concentrated oil for people or pets. PFAF reports no weed potential for this species. The supplied evidence names no specific pest or disease.