Native Plants

Alpine Collomia

Collomia debilis var. trifida

USDA symbol: CODET

perennial forb

Lower 48 states: native

If you’re on the hunt for lesser-known native wildflowers to add charm to your western garden, let me introduce you to alpine collomia (Collomia debilis var. trifida). This petite perennial might not be the showiest plant in the nursery, but it’s got that quiet, understated beauty that makes native plant ...

Alpine Collomia: A Delicate Western Native Worth Discovering

If you’re on the hunt for lesser-known native wildflowers to add charm to your western garden, let me introduce you to alpine collomia (Collomia debilis var. trifida). This petite perennial might not be the showiest plant in the nursery, but it’s got that quiet, understated beauty that makes native plant enthusiasts swoon.

What Exactly Is Alpine Collomia?

Alpine collomia is a native perennial forb – basically, it’s a non-woody flowering plant that comes back year after year. You might also find it listed under its botanical synonym, Collomia debilis var. integra, just to keep things interesting! As a member of the phlox family, it shares some family traits but maintains its own unique personality.

Where Does It Call Home?

This little beauty is truly a child of the American West, naturally occurring across six western states:

  • Idaho
  • Montana
  • Nevada
  • Oregon
  • Washington
  • Wyoming

It’s particularly fond of mountainous regions, which explains that alpine part of its common name.

  • Species observed
  • No observations

Why Consider Alpine Collomia for Your Garden?

Here’s where I need to be honest with you – alpine collomia is something of a gardening mystery. While it’s definitely native and has potential as a garden plant, specific cultivation information is surprisingly scarce. This could mean one of two things: either it’s so easy to grow that nobody bothers writing about it, or it’s challenging enough that few people attempt it!

What we do know is that it’s a perennial, so once established, it should return year after year. Its delicate nature suggests it would fit beautifully in native plant gardens, rock gardens, or naturalized areas where you want to showcase regional flora.

Growing Conditions and Care

Given its alpine origins and western distribution, alpine collomia likely prefers:

  • Well-draining soil (mountain plants typically hate wet feet)
  • Full sun to partial shade
  • Cool, moist conditions during growing season
  • Cold winter temperatures (it’s built for mountain life)

The specific USDA hardiness zones aren’t well-documented, but given its range across northern and mountainous western states, it’s probably quite cold-hardy.

The Honest Truth About Growing Alpine Collomia

Here’s the thing – alpine collomia might be one of those collector’s plants that appeals more to native plant purists than casual gardeners. The lack of readily available growing information suggests it’s either not commonly cultivated or requires specific conditions that aren’t easily replicated in typical garden settings.

If you’re determined to try growing it, your best bet might be to:

  • Source seeds or plants from native plant societies in its natural range
  • Mimic its natural habitat as closely as possible
  • Start with a small trial area before committing to larger plantings
  • Connect with local native plant groups who might have hands-on experience

The Bottom Line

Alpine collomia represents the exciting challenge of working with truly native, regional plants. While it might not be as foolproof as purple coneflower or black-eyed Susan, it offers the satisfaction of growing something genuinely special to the American West.

If you’re in its native range and love the idea of supporting local ecosystems, alpine collomia could be worth the adventure. Just go in with realistic expectations and maybe have a backup plan involving more tried-and-true native alternatives!

Sometimes the most rewarding garden plants are the ones that make us work a little harder – and alpine collomia definitely fits that description.

Collomia debilis var. trifida is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Collomia debilis var. trifida is also known as:

Collomia debilis Greene var. integra | USDA symbol: CODEI2

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Solanales
Family: Polemoniaceae Juss. - Phlox family
Genus: Collomia Nutt. - trumpet

Species: Collomia debilis (S. Watson) Greene - alpine collomia

Variety: Collomia debilis (S. Watson) Greene var. trifida Payson - alpine collomia

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