North America Native Plant

Idaho Frasera

Botanical name: Frasera albicaulis var. idahoensis

USDA symbol: FRALI

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Swertia albicaulis (Douglas ex Griseb.) Kuntze var. idahoensis (H. St. John) J. Pringle (SWALI)  âš˜  Swertia idahoensis H. St. John (SWID)   

Idaho Frasera: A Hidden Gem for Pacific Northwest Native Gardens If you’re looking to add some vertical drama to your native plant garden while supporting local pollinators, meet Idaho frasera (Frasera albicaulis var. idahoensis). This perennial wildflower might not be the most famous native on the block, but it’s definitely ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Idaho Frasera: A Hidden Gem for Pacific Northwest Native Gardens

If you’re looking to add some vertical drama to your native plant garden while supporting local pollinators, meet Idaho frasera (Frasera albicaulis var. idahoensis). This perennial wildflower might not be the most famous native on the block, but it’s definitely worth getting to know – especially if you’re gardening in the Pacific Northwest.

What Makes Idaho Frasera Special?

Idaho frasera is a true native of the American West, specifically calling Idaho and Oregon home. As a member of the gentian family, this herbaceous perennial brings a unique architectural element to native gardens with its tall flower spikes that can create stunning vertical accents in naturalized plantings.

This plant goes by a few scientific names in botanical circles – you might also see it listed as Swertia albicaulis var. idahoensis or Swertia idahoensis in older references. But whatever you call it, Idaho frasera represents an important piece of Pacific Northwest flora.

Why Plant Idaho Frasera in Your Garden?

Here are some compelling reasons to consider adding this native beauty to your landscape:

  • Native authenticity: Supports local ecosystems and provides habitat for native wildlife
  • Pollinator magnet: The flowers attract bees, butterflies, and other beneficial insects
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Unique appearance: Tall flowering spikes add vertical interest to wildflower gardens
  • Perennial reliability: Comes back year after year once established

A Word About Conservation

Before you start planning where to plant Idaho frasera, it’s important to know that this variety has a conservation status that suggests it may be somewhat uncommon in the wild. If you decide to grow it, make sure you source your plants or seeds from reputable native plant nurseries that practice responsible collection methods. Never collect from wild populations.

Perfect Garden Settings

Idaho frasera shines in several garden scenarios:

  • Native wildflower meadows
  • Restoration and naturalization projects
  • Mixed native perennial borders
  • Dry gardens and xeriscapes
  • Pollinator gardens

Growing Idaho Frasera Successfully

The good news is that Idaho frasera isn’t particularly fussy once you understand its preferences. Here’s what you need to know:

Hardiness: This tough perennial can handle USDA zones 4-8, making it suitable for most Pacific Northwest gardens and beyond.

Sun and Soil Requirements: Idaho frasera prefers full sun to partial shade and well-drained soils. It’s adapted to the drier conditions typical of its native range, so avoid waterlogged areas.

Planting Tips: Plant in spring after the last frost, or in fall to allow for natural stratification over winter. Space plants appropriately to allow for their mature size and good air circulation.

Care and Maintenance

One of the best things about Idaho frasera is how low-maintenance it becomes once established:

  • Watering: Drought tolerant when established, but provide occasional deep watering during extended dry periods
  • Fertilizing: Generally unnecessary – native plants prefer lean soils
  • Pruning: Allow flowers to go to seed for wildlife and natural reseeding, then cut back in late fall or early spring
  • Patience required: Like many native perennials, it may take a few years to become fully established and reach its flowering potential

Wildlife and Ecosystem Benefits

Beyond its garden appeal, Idaho frasera plays an important ecological role. The flowers provide nectar for native bees, butterflies, and other pollinators during its blooming season. As a native plant, it’s also adapted to work harmoniously with local wildlife and other native species.

Is Idaho Frasera Right for Your Garden?

Idaho frasera could be perfect for your garden if you:

  • Live in or near its native range (Idaho, Oregon, or similar climates)
  • Want to support native ecosystems and pollinators
  • Prefer low-maintenance, drought-tolerant plants
  • Are creating a native wildflower garden or restoration project
  • Appreciate unique, less common native plants

However, you might want to choose something else if you need immediate impact (this plant takes time to establish), have very wet conditions, or are looking for non-native ornamental alternatives.

The Bottom Line

Idaho frasera offers Pacific Northwest gardeners a chance to grow a truly regional native that supports local ecosystems while adding unique beauty to the landscape. With its tall flower spikes, pollinator appeal, and low-maintenance nature, it’s a worthy addition to any native plant enthusiast’s garden. Just remember to source it responsibly and be patient as it establishes – good things come to those who wait, and Idaho frasera is definitely worth the wait.

Idaho Frasera

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

Gentianales

Family

Gentianaceae Juss. - Gentian family

Genus

Frasera Walter - green gentian

Species

Frasera albicaulis Douglas ex Griseb. - whitestem frasera

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