- Creeping Thyme thrives as a vibrant ornamental herb, known for its adaptable gardening benefits and fragrance.
2nd Year Maturity. Non-GMO, Heirloom Creeping Thyme Herb Garden Seed from True Leaf Market. Thymus serpyllum. Creeping Thyme, also known as "Mother-of-thyme" is a cold hardy perennial that is often planted as a trailing ground cover, garden filler or aromatic landscape. Creeping Thyme develops silver-green foliage producing earthy, floral flavor similar to rosemary. As a member of the mint family, Creeping Thyme thrives as a vibrant ornamental herb, known for its adaptable gardening benefits and fragrance.