North America Native Plant

Variegated Phlox

Botanical name: Phlox variabilis nudata

USDA symbol: PHVAN

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Variegated Phlox: A Rare Montana Native Worth Knowing About If you’ve stumbled across the name variegated phlox while researching native plants, you’ve discovered one of Montana’s more mysterious botanical residents. Phlox variabilis nudata is a perennial forb that calls the Big Sky State home, though you’re unlikely to find it ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4QT1T3: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ 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 ⚘ 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. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Variegated Phlox: A Rare Montana Native Worth Knowing About

If you’ve stumbled across the name variegated phlox while researching native plants, you’ve discovered one of Montana’s more mysterious botanical residents. Phlox variabilis nudata is a perennial forb that calls the Big Sky State home, though you’re unlikely to find it at your local nursery – and there’s a good reason for that.

A True Montana Native

This native phlox species is found exclusively in Montana, making it a true regional treasure. As a perennial forb, it’s an herbaceous plant that dies back each winter but returns year after year from its underground parts. Unlike woody shrubs or trees, variegated phlox lacks significant woody tissue, putting it in the same category as many of our favorite wildflowers.

The Rarity Factor

Here’s where things get interesting – and a bit concerning. Variegated phlox carries a conservation status of S3S4QT1T3, which essentially means its population status is somewhat uncertain but potentially vulnerable. This rarity status is crucial information for any gardener considering this species.

If you’re drawn to growing this Montana native, proceed with extreme caution and responsibility. Only source plant material from reputable native plant nurseries that can guarantee their stock comes from ethical, sustainable collection practices – never from wild populations.

The Information Gap

Unfortunately, detailed growing information for this specific phlox species is quite limited. We don’t have reliable data on its preferred growing conditions, mature size, specific care requirements, or even what it looks like in full bloom. This information gap likely reflects both its rarity and its limited use in cultivation.

Consider These Alternatives

If you’re interested in adding native phlox to your Montana garden, consider these better-documented alternatives:

  • Phlox longifolia (Long-leaved phlox) – more widely available and better understood
  • Phlox hoodii (Hood’s phlox) – another Montana native with known cultivation requirements
  • Other regional wildflowers that provide similar ecological benefits with less conservation concern

The Bottom Line

Variegated phlox represents one of those fascinating plants that reminds us how much we still don’t know about our native flora. While its rarity makes it an intriguing species from a conservation standpoint, the lack of cultivation information and potential vulnerability make it a challenging choice for home gardeners.

If you do encounter this species in the wild during your Montana adventures, take a moment to appreciate this rare native – but please leave it undisturbed for future generations to discover and study.

Variegated Phlox

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

Solanales

Family

Polemoniaceae Juss. - Phlox family

Genus

Phlox L. - phlox

Species

Phlox variabilis Brand - variegated phlox

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