North America Native Plant

Parry’s Clover

Botanical name: Trifolium parryi salictorum

USDA symbol: TRPAS

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Trifolium salictorum Greene ex Rydb. (TRSA6)   

Parry’s Clover: A Rare Colorado Native Worth Knowing If you’re passionate about native gardening and drawn to unique, regionally-specific plants, you might have stumbled across Parry’s clover (Trifolium parryi salictorum). This lesser-known member of the pea family represents one of those fascinating native plants that tells the story of Colorado’s ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3T4Q: 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. ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 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. ⚘

Parry’s Clover: A Rare Colorado Native Worth Knowing

If you’re passionate about native gardening and drawn to unique, regionally-specific plants, you might have stumbled across Parry’s clover (Trifolium parryi salictorum). This lesser-known member of the pea family represents one of those fascinating native plants that tells the story of Colorado’s diverse botanical heritage—though finding reliable growing information can be as challenging as finding the plant itself!

What Makes This Clover Special?

Trifolium parryi salictorum, also known by its synonym Trifolium salictorum, is a perennial herbaceous plant native exclusively to Colorado. Unlike the common clovers you might see carpeting lawns or roadsides, this is a specialized native that has evolved to thrive in Colorado’s unique mountain environments.

As a forb (a non-woody flowering plant), this clover lacks significant woody tissue and maintains its growing points at or below ground level—a smart adaptation for surviving harsh mountain winters. Its perennial nature means it returns year after year, making it a potentially valuable addition to native plant gardens.

Where Does It Call Home?

This particular variety of Parry’s clover is found only in Colorado, making it a true regional endemic. Its limited geographic distribution adds to its special character but also raises important conservation considerations for gardeners.

A Word About Rarity

Here’s something important to consider: Trifolium parryi salictorum has a Global Conservation Status of S5T3T4Q, which indicates some level of conservation concern. While the exact definition of this status isn’t entirely clear, it suggests this plant deserves our respect and careful consideration.

If you’re interested in growing this plant, please ensure you source it responsibly:

  • Purchase only from reputable native plant nurseries
  • Never collect from wild populations
  • Verify that any seeds or plants have been ethically propagated
  • Consider growing it as part of conservation efforts rather than just ornamental use

The Challenge: Limited Growing Information

Here’s where things get tricky for the eager gardener. Unlike popular native plants that have been extensively studied and cultivated, Trifolium parryi salictorum remains something of a mystery in terms of specific growing requirements. This isn’t unusual for highly specialized native plants with limited distributions.

What we can reasonably assume, based on its Colorado mountain origins:

  • It likely prefers well-draining soils
  • Probably cold-hardy (surviving Colorado’s harsh winters)
  • May require specific soil conditions or elevations
  • Could have particular moisture requirements

Potential Garden Value

While we don’t have specific information about this clover’s ornamental qualities, members of the Trifolium family typically offer several benefits to native gardens:

  • Pollinator support: Clover flowers are generally excellent for native bees and other pollinators
  • Nitrogen fixation: Like other legumes, it likely enriches soil by fixing atmospheric nitrogen
  • Regional authenticity: Perfect for Colorado native plant gardens seeking true regional plants
  • Educational value: A conversation starter about Colorado’s unique flora

Should You Grow It?

The honest answer? It depends on your goals and commitment level. This isn’t a plant for casual gardeners looking for easy, well-documented natives. However, if you’re:

  • A dedicated Colorado native plant enthusiast
  • Interested in conservation gardening
  • Willing to experiment and potentially fail
  • Committed to responsible sourcing practices

Then Parry’s clover might be worth the challenge!

Alternative Approaches

If you love the idea of native clovers but want something more reliable, consider other Colorado-native legumes with better-documented growing requirements. Your local native plant society or extension office can suggest well-established alternatives that provide similar ecological benefits with greater success rates.

Sometimes the most responsible approach to rare native plants is to appreciate them in their natural habitats while growing their more common relatives in our gardens. Either way, you’re supporting native plant communities and the wildlife that depends on them.

The Bottom Line

Trifolium parryi salictorum represents the fascinating complexity of native plant gardening—plants that are ecologically important, regionally significant, but challenging to cultivate. Whether you choose to grow it or simply learn about it, you’re connecting with Colorado’s unique botanical heritage and the ongoing story of conservation through gardening.

Parry’s Clover

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Trifolium L. - clover

Species

Trifolium parryi A. Gray - Parry's clover

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