North America Non-native Plant

Creeping Thyme

Botanical name: Thymus praecox arcticus

USDA symbol: THPRA

Life cycle: perennial

Habit: subshrub

Native status: Non-native, reproduces and persists in the wild in Canada âš˜ Non-native, reproduces and persists in the wild in Greenland âš˜ Non-native, reproduces and persists in the wild in the lower 48 states  

Synonyms: Thymus arcticus (Durand) Ronniger (THAR8)  âš˜  Thymus drucei Ronniger (THDR2)  âš˜  Thymus serpyllum auct. non L. (THSE)   

Creeping Thyme: A Fragrant Ground Cover for Your Garden If you’re looking for a low-maintenance ground cover that releases a delightful fragrance when stepped on, creeping thyme (Thymus praecox arcticus) might just be the plant you’ve been searching for. This hardy perennial herb forms dense, carpet-like mats that can transform ...

Creeping Thyme: A Fragrant Ground Cover for Your Garden

If you’re looking for a low-maintenance ground cover that releases a delightful fragrance when stepped on, creeping thyme (Thymus praecox arcticus) might just be the plant you’ve been searching for. This hardy perennial herb forms dense, carpet-like mats that can transform bare spots in your garden into aromatic, colorful displays.

What Is Creeping Thyme?

Creeping thyme is a non-native perennial herb that belongs to the mint family. Originally from the Arctic regions of northern Europe and Asia, this tough little plant has found its way into gardens across North America. You might also see it listed under various botanical synonyms including Thymus arcticus, Thymus drucei, or sometimes incorrectly as Thymus serpyllum.

As a forb herb, creeping thyme is a vascular plant without significant woody tissue above ground. Don’t let that technical description fool you though – this plant is anything but fragile!

Where Does It Grow?

Creeping thyme has established itself across a wide range of locations in North America. You can find it growing in Canadian provinces including British Columbia, Nova Scotia, Ontario, and Quebec. In the United States, it’s present in states from coast to coast, including Georgia, Illinois, Massachusetts, Montana, Oregon, Utah, Washington, and many others in between.

Why Consider Creeping Thyme for Your Garden?

There are several compelling reasons why gardeners fall in love with this aromatic ground cover:

  • Aesthetic Appeal: Creates dense, low-growing mats topped with clusters of tiny pink to purple flowers during summer months
  • Fragrance: Releases a wonderful herbal scent when walked on or brushed against
  • Durability: Tolerates foot traffic better than traditional grass lawns
  • Pollinator Magnet: The nectar-rich flowers attract bees, butterflies, and other beneficial insects
  • Low Maintenance: Once established, requires minimal water and care

Perfect Garden Spots for Creeping Thyme

Creeping thyme shines in several garden settings:

  • Rock gardens and between stepping stones
  • Herb gardens and Mediterranean-style landscapes
  • Xeriscape gardens where water conservation is important
  • As a lawn alternative in low-traffic areas
  • Edge plantings along pathways and borders

Growing Conditions and Care

The beauty of creeping thyme lies in its simplicity. This plant thrives in USDA hardiness zones 3-8, making it suitable for most of North America.

Sunlight: Provide full sun for the best growth and flowering. While it can tolerate some shade, you’ll get the most robust plants and heaviest bloom in sunny locations.

Soil: Well-drained soil is absolutely essential. Creeping thyme actually prefers lean, alkaline soils and struggles in rich, moisture-retentive conditions. If you have heavy clay soil, consider amending with sand or gravel.

Water: Once established, this drought-tolerant plant needs very little supplemental watering. In fact, overwatering is more likely to harm it than help it.

Planting and Care Tips

Getting creeping thyme established in your garden is straightforward:

  • Plant in spring after the last frost date
  • Space plants 6-12 inches apart for eventual coverage
  • Water regularly during the first few weeks while roots establish
  • Once established, water only during extended dry periods
  • Trim lightly after flowering to maintain compact growth
  • Avoid fertilizing – rich soils can make the plant leggy and less fragrant

A Word About Native Alternatives

While creeping thyme can be a lovely addition to your garden, consider exploring native ground cover options that might provide similar benefits while supporting local ecosystems. Native alternatives vary by region but might include wild strawberry, kinnikinnick, or native sedums. Check with your local native plant society for recommendations specific to your area.

The Bottom Line

Creeping thyme offers gardeners a fragrant, low-maintenance ground cover that’s tough enough to handle foot traffic while pretty enough to serve as an ornamental feature. Its ability to attract pollinators and thrive in challenging conditions makes it a practical choice for many garden situations. Just remember to plant it in well-drained soil and resist the urge to pamper it – this is one plant that truly thrives on neglect!

Creeping Thyme

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Lamiales

Family

Lamiaceae Martinov - Mint family

Genus

Thymus L. - thyme

Species

Thymus praecox Opiz - mother of thyme

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA