North America Native Plant

Longtube Twinflower

Botanical name: Linnaea borealis longiflora

USDA symbol: LIBOL2

Life cycle: perennial

Habit: subshrub

Native status: Native to Alaska âš˜ Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Linnaea borealis L. var. longiflora Torr. (LIBOL)   

Longtube Twinflower: A Delicate Native Groundcover for Woodland Gardens If you’ve ever wandered through a cool, mossy forest and caught a whiff of something sweetly fragrant, you might have encountered the charming longtube twinflower (Linnaea borealis longiflora). This delicate native perennial is like nature’s own little fairy tale plant, with ...

Longtube Twinflower: A Delicate Native Groundcover for Woodland Gardens

If you’ve ever wandered through a cool, mossy forest and caught a whiff of something sweetly fragrant, you might have encountered the charming longtube twinflower (Linnaea borealis longiflora). This delicate native perennial is like nature’s own little fairy tale plant, with paired pink bells that seem to dance on slender stems above a carpet of tiny evergreen leaves.

What Makes Longtube Twinflower Special?

Longtube twinflower is a true North American native, naturally found across Alaska, western Canada, and several northwestern U.S. states including Idaho, Montana, New Mexico, Oregon, and Washington. As a subspecies of the more widely distributed twinflower, this particular variety has adapted to thrive in some of our continent’s most pristine wilderness areas.

This low-growing perennial herb forms a trailing groundcover that rarely exceeds a few inches in height but can spread gradually to create beautiful natural carpets. The plant gets its common name from its distinctive paired flowers – they literally grow in twins! Each delicate, tubular bloom is soft pink to white and releases a lovely fragrance that’s especially noticeable in the evening.

Why Plant Longtube Twinflower?

There are several compelling reasons to consider this native beauty for your garden:

  • Native plant benefits: Supporting local ecosystems and wildlife while requiring less water and maintenance than non-native alternatives
  • Unique aesthetic appeal: The paired flowers and trailing habit create a distinctive, cottage garden charm
  • Fragrant blooms: Evening fragrance adds another sensory dimension to your garden
  • Pollinator support: Attracts small native bees, flies, and butterflies
  • Low maintenance: Once established, requires minimal care
  • Evergreen foliage: Provides year-round interest in milder climates

Perfect Garden Settings

Longtube twinflower isn’t for every garden, but it’s absolutely perfect for the right setting. This woodland native thrives in:

  • Shaded woodland gardens
  • Naturalistic landscape designs
  • Rock gardens with dappled shade
  • Native plant gardens
  • Cool, mountainous regions

Think of it as nature’s groundcover for those cool, quiet corners where you want something special but subtle.

Growing Conditions and Care

Success with longtube twinflower comes down to recreating its natural habitat. This plant is hardy in USDA zones 2-6, making it perfect for cooler climates but challenging in hot, humid regions.

Light requirements: Partial to full shade – direct sunlight can stress or kill this woodland native.

Soil needs: Moist, well-draining, acidic soil rich in organic matter. Think forest floor conditions with plenty of leaf mold and natural debris.

Water requirements: Consistent moisture is key, but avoid waterlogged conditions. The soil should feel like a wrung-out sponge.

Temperature preferences: Cool temperatures year-round. This isn’t a plant for hot summer regions.

Planting and Establishment Tips

Getting longtube twinflower established requires patience and attention to detail:

  • Plant in spring or early fall when temperatures are cool
  • Amend soil with plenty of organic matter like compost or leaf mold
  • Ensure excellent drainage while maintaining consistent moisture
  • Mulch lightly with organic materials to keep roots cool
  • Be patient – this plant establishes slowly but surely
  • Avoid disturbing once established, as it doesn’t like root disruption

Is This Plant Right for You?

Longtube twinflower is definitely a specialty plant that won’t work in every garden. Consider it if you:

  • Live in USDA zones 2-6
  • Have consistently cool, shaded areas
  • Enjoy subtle, woodland-style plantings
  • Want to support native wildlife
  • Don’t mind slow-growing plants
  • Appreciate fragrant flowers

Skip this one if you’re looking for fast results, bright colors, or plants that can handle heat and full sun.

A Final Word

Longtube twinflower might not be the showiest plant in the garden center, but for the right gardener in the right location, it’s pure magic. This native perennial offers a connection to wild places and a chance to support local ecosystems while creating something truly special in your woodland garden. Just remember – patience and the right conditions are your keys to success with this delicate forest gem.

Longtube Twinflower

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

Dipsacales

Family

Caprifoliaceae Juss. - Honeysuckle family

Genus

Linnaea L. - twinflower

Species

Linnaea borealis L. - twinflower

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