North America Non-native Plant

Woodland Calamint

Botanical name: Calamintha sylvatica sylvatica

USDA symbol: CASYS

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Canada  

Woodland Calamint: A Fragrant Herb with European Charm If you’re looking for a low-maintenance perennial that brings both fragrance and pollinator appeal to your garden, woodland calamint (Calamintha sylvatica sylvatica) might catch your attention. This charming herb from Europe has found its way into North American gardens, where it quietly ...

Woodland Calamint: A Fragrant Herb with European Charm

If you’re looking for a low-maintenance perennial that brings both fragrance and pollinator appeal to your garden, woodland calamint (Calamintha sylvatica sylvatica) might catch your attention. This charming herb from Europe has found its way into North American gardens, where it quietly does its job as a reliable groundcover and pollinator magnet.

What Exactly is Woodland Calamint?

Woodland calamint is a perennial forb—basically a non-woody herbaceous plant that comes back year after year. As part of the mint family, it shares that characteristic aromatic quality that makes you want to brush your fingers across its leaves just to release that fresh, minty scent. Unlike some of its more aggressive mint cousins, woodland calamint tends to be much better behaved in the garden.

Where Does It Come From?

Originally hailing from Europe’s Mediterranean region, woodland calamint has established itself as a non-native species in parts of Canada, specifically in British Columbia and Quebec. While it reproduces on its own in the wild and persists without human intervention, its current status regarding invasiveness isn’t well documented.

Why Gardeners Love (and Sometimes Question) This Plant

There’s a lot to appreciate about woodland calamint, but like any non-native plant, it comes with considerations:

The Good Stuff:

  • Delicate white to pale pink tubular flowers that bloom throughout summer
  • Wonderfully fragrant foliage that releases its scent when touched
  • Excellent pollinator plant—bees and butterflies can’t resist it
  • Low maintenance once established
  • Drought tolerant, making it perfect for water-wise gardens
  • Works beautifully as groundcover or in herb gardens

Things to Consider:

  • It’s not native to North America, so it won’t support native wildlife as effectively as indigenous plants
  • Can spread via rhizomes, though it’s generally well-behaved
  • May not be the best choice if you’re committed to native-only gardening

Where Woodland Calamint Shines in Your Garden

This versatile plant fits beautifully into several garden styles. It’s perfect for cottage gardens where that slightly wild, romantic look is desired. Herb gardeners love it for its aromatic qualities, and it makes an excellent addition to pollinator gardens where you want to support beneficial insects.

Woodland calamint works wonderfully as a groundcover in naturalized areas, and its relatively compact growth habit means it won’t overwhelm more delicate neighbors.

Growing Conditions and Care

One of woodland calamint’s best qualities is how easy it is to please. Here’s what it needs to thrive:

  • Sunlight: Partial shade to full sun—it’s quite adaptable
  • Soil: Well-drained soil is essential; it doesn’t like wet feet
  • Water: Drought tolerant once established, but appreciates regular water during its first season
  • Climate: Hardy in USDA zones 5-8

Planting and Care Tips

Getting woodland calamint established is refreshingly straightforward:

  • Plant in spring after the last frost date
  • Space plants about 12-18 inches apart to allow for spreading
  • Water regularly the first year to help establish roots
  • Divide clumps every 3-4 years to prevent overcrowding and maintain vigor
  • Deadhead spent flowers to encourage continued blooming
  • Very little fertilizer needed—this plant prefers lean conditions

A Balanced Perspective

While woodland calamint offers genuine garden benefits, it’s worth considering native alternatives that provide similar qualities while supporting local ecosystems. Native mints like wild bergamot (Monarda fistulosa) or mountain mint (Pycnanthemum species) offer comparable aromatic qualities and pollinator benefits while supporting native wildlife more effectively.

That said, if you already have woodland calamint or choose to grow it, you can enjoy it responsibly by preventing it from spreading beyond your garden boundaries and pairing it with native plants to create a more ecologically balanced landscape.

The Bottom Line

Woodland calamint is an attractive, low-maintenance perennial that brings fragrance and pollinator appeal to gardens. While it’s not native to North America, it appears to be a relatively well-behaved garden citizen. Whether you choose to grow it or opt for native alternatives, the most important thing is creating a garden that brings you joy while being mindful of the broader ecological picture.

Woodland Calamint

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

Calamintha Mill. - calamint

Species

Calamintha sylvatica Bromf. - woodland calamint

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