North America Non-native Plant

Thyme

Botanical name: Thymus

USDA symbol: THYMU

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  

Thyme: The Aromatic Mediterranean Marvel for Your Garden If you’ve ever brushed against a patch of thyme and been greeted by its unmistakable fragrance, you know there’s something special about this little herb. Thymus, commonly known as thyme, is a charming perennial that has found its way from Mediterranean hillsides ...

Thyme: The Aromatic Mediterranean Marvel for Your Garden

If you’ve ever brushed against a patch of thyme and been greeted by its unmistakable fragrance, you know there’s something special about this little herb. Thymus, commonly known as thyme, is a charming perennial that has found its way from Mediterranean hillsides into gardens across North America – and for good reason!

What Exactly Is Thyme?

Thyme is a low-growing perennial forb herb – essentially a vascular plant that stays soft and green rather than developing woody stems like shrubs or trees. These hardy little plants form dense, spreading mats of tiny, aromatic leaves topped with clusters of small tubular flowers that can be white, pink, or purple depending on the variety.

Where Does Thyme Come From?

Originally native to the Mediterranean region, Europe, Asia, and North Africa, thyme has become a well-traveled plant. In North America, it’s considered non-native but has established itself across a wide range, reproducing naturally in the wild across much of Canada and the United States.

You can find thyme growing in British Columbia, Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec, and numerous U.S. states including Connecticut, Delaware, Georgia, Illinois, Indiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Montana, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oregon, Pennsylvania, Rhode Island, Tennessee, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, and Wyoming.

Why Gardeners Love (and Sometimes Question) Thyme

There’s plenty to appreciate about thyme, but like any non-native plant, it comes with considerations:

The Good Stuff:

  • Incredibly drought-tolerant once established
  • Fantastic pollinator magnet – bees absolutely adore it
  • Aromatic foliage that’s both culinary and ornamental
  • Forms attractive ground cover that can handle foot traffic
  • Blooms for extended periods, typically in summer
  • Low maintenance and deer resistant

Things to Consider:

  • As a non-native plant, it doesn’t support native wildlife ecosystems as effectively as indigenous species
  • Can spread aggressively in ideal conditions
  • May outcompete native ground covers in some areas

Where Thyme Shines in Your Landscape

Thyme is incredibly versatile and fits beautifully into several garden styles:

  • Rock gardens: Perfect for tucking between stones where its spreading habit softens hard edges
  • Herb gardens: A must-have for culinary enthusiasts
  • Mediterranean-style landscapes: Pairs beautifully with lavender, rosemary, and other drought-loving plants
  • Ground cover: Excellent for areas where grass struggles
  • Pathway edging: Creates fragrant borders that release scent when brushed against

Growing Thyme Successfully

The good news? Thyme is remarkably easy to grow once you understand its preferences.

Ideal Growing Conditions:

  • Sunlight: Full sun (6+ hours daily) for best growth and essential oil production
  • Soil: Well-draining soil is absolutely crucial – thyme hates wet feet
  • pH: Prefers slightly alkaline to neutral soil (pH 6.5-8.0)
  • Hardiness: Generally hardy in USDA zones 4-9
  • Water: Drought-tolerant once established; avoid overwatering

Planting and Care Tips:

  • Plant in spring after the last frost
  • Space plants 6-12 inches apart to allow for spreading
  • Water regularly the first season, then reduce watering
  • Trim back after flowering to maintain shape and encourage new growth
  • Divide established clumps every 3-4 years to maintain vigor
  • In colder zones, provide winter protection with mulch

Pollinator Paradise

One of thyme’s greatest contributions to your garden ecosystem is its appeal to pollinators. The small flowers are packed with nectar, making them irresistible to bees, butterflies, and other beneficial insects. During peak bloom, a thyme patch can be absolutely buzzing with activity!

Native Alternatives to Consider

While thyme can be a wonderful addition to your garden, consider incorporating some native alternatives that provide similar benefits while supporting local ecosystems:

  • Wild bergamot (Monarda fistulosa): Aromatic native with similar pollinator appeal
  • Creeping phlox (Phlox subulata): Low-growing native ground cover
  • Wild thyme alternatives: Look for native mints or other aromatic ground covers native to your specific region

The Bottom Line

Thyme can be a delightful addition to the right garden, especially if you’re creating a Mediterranean-style landscape, need reliable ground cover, or want to attract pollinators. Just be mindful of its spreading nature and consider balancing your plantings with native species that support local wildlife. With minimal care and the right growing conditions, thyme will reward you with fragrant foliage, beautiful blooms, and a steady parade of happy pollinators – not to mention fresh herbs for your kitchen!

Whether you’re a seasoned gardener or just starting out, thyme’s forgiving nature and multiple benefits make it worth considering for your landscape. Just remember to plant responsibly and enjoy the aromatic journey!

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

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