Thymus pseudolanuginosus, commonly known as woolly thyme, is a low-growing, spreading perennial herb in the mint family. It is valued for its ground-covering ability, unique texture and drought tolerance, making it a favored choice for rock gardens, between stepping stones and in other areas of the landscape where a tough, yet attractive, plant is needed. Woolly thyme is characterized by its soft, silver-gray to green foliage that has a fuzzy, woolly appearance, hence the name. It forms a dense, mat-like ground cover, typically reaching only about 1 in. to 3 in. H but spreading up to 18 in. or more in width. Its stems root at the nodes, helping the plant to spread and fill in areas quickly. Wooly thyme is hardy in USDA zones 5 through 8. It is capable of withstanding both cold winters and hot summers within these zones, making it a versatile choice for many gardeners. Woolly thyme prefers full sun but can tolerate partial shade. It thrives in well-drained, even sandy or rocky, soil. Poor soil drainage is one of the few conditions it does not tolerate well. This thyme variety is low-maintenance. Woolly thyme is an excellent ground cover for dry, Sunny areas. It is often used in rock gardens, as a filler between stepping stones or pavers and in crevices of stone walls. Its ability to tolerate light foot traffic makes it a good choice for planting in paths and patios.