Wooly thyme - the wooliest of all thymes - forms a dense ground-covering mat of tiny, densely hairy leaves. The foliage has barely any fragrance and is unsuitable for culinary use. In summer, tiny pink tubular flowers appear. Thyme thrives in any dry, well-drained spot. Patios, walks, rock gardens, stone walls, and pond borders all benefit from the creeping, cascading habit of woolly thyme. It also spills gracefully over stone walls and can be grown between pavers.