North America Native Plant

Intermountain Bedstraw

Botanical name: Galium serpenticum wenatchicum

USDA symbol: GASEW2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Intermountain Bedstraw: A Lesser-Known Native Perennial for Pacific Northwest Gardens If you’re passionate about native plants and love discovering hidden gems for your garden, Intermountain bedstraw (Galium serpenticum wenatchicum) might just pique your interest. This perennial herb represents one of nature’s quieter performers – not flashy or attention-grabbing, but steadily ...

Intermountain Bedstraw: A Lesser-Known Native Perennial for Pacific Northwest Gardens

If you’re passionate about native plants and love discovering hidden gems for your garden, Intermountain bedstraw (Galium serpenticum wenatchicum) might just pique your interest. This perennial herb represents one of nature’s quieter performers – not flashy or attention-grabbing, but steadily contributing to the native plant community in its own understated way.

What Exactly Is Intermountain Bedstraw?

Intermountain bedstraw belongs to the fascinating Galium genus, commonly known as bedstraws. As a perennial forb, this plant lacks the woody stems of shrubs and trees, instead maintaining its herbaceous nature year after year. Think of it as one of those reliable garden residents that quietly returns each spring without making a big fuss about it.

The technical definition describes it as a vascular plant without significant woody tissue above or at the ground, but in gardener’s terms, it’s simply a soft-stemmed perennial that dies back in winter and reemerges from its root system when conditions improve.

Where Does It Call Home?

This particular bedstraw is a true native of the lower 48 states, with its primary residence in Washington state. As its name suggests, it’s adapted to the intermountain regions, likely thriving in the unique conditions found in Washington’s diverse landscapes.

Why Consider Intermountain Bedstraw for Your Garden?

Here’s where things get interesting – and a bit challenging. Intermountain bedstraw falls into that category of native plants that are ecologically important but not well-documented in horticultural circles. This means:

  • You’d be growing a true regional native, supporting local ecosystem health
  • As a perennial, it offers long-term garden value once established
  • It’s likely adapted to local climate conditions, potentially making it low-maintenance
  • You’d be participating in conservation of lesser-known native species

The Growing Challenge

Here’s the honest truth: specific cultivation information for Intermountain bedstraw is quite limited. Unlike popular native plants that have been extensively studied and grown, this species remains somewhat mysterious in terms of its exact garden requirements and performance.

What we do know is that it’s a perennial herb native to Washington, suggesting it’s adapted to the Pacific Northwest’s climate patterns. However, without detailed information about its preferred growing conditions, USDA hardiness zones, or specific care requirements, growing this plant becomes more of an adventurous experiment than a sure bet.

Should You Grow It?

If you’re an experienced native plant gardener who enjoys the challenge of working with lesser-known species, Intermountain bedstraw could be an intriguing addition. However, consider these factors:

  • Limited availability from nurseries specializing in native plants
  • Lack of specific growing guidance
  • Unknown ornamental value or garden performance
  • Potential difficulty in sourcing seeds or plants

Alternative Approaches

If you’re drawn to the idea of growing native bedstraws but want more reliable options, consider researching other Galium species that are better documented for garden use. Many bedstraws offer similar ecological benefits with more available cultivation information.

You might also focus on other well-documented Washington native perennials that can provide proven garden performance while still supporting local ecosystems.

The Bottom Line

Intermountain bedstraw represents the fascinating world of lesser-known native plants. While its ecological importance as a native species is clear, its role in cultivated gardens remains largely unexplored. For most gardeners, this plant is better appreciated in its natural habitat rather than attempted in home landscapes.

If you do decide to seek out this species, work only with reputable native plant suppliers who can ensure responsible sourcing. Remember, sometimes the best way to support native plants is to protect and appreciate them in their natural environments while choosing better-documented natives for our gardens.

Intermountain Bedstraw

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

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Galium L. - bedstraw

Species

Galium serpenticum Dempster - Intermountain bedstraw

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