North America Native Plant

Longstalk Clover

Botanical name: Trifolium longipes atrorubens

USDA symbol: TRLOA

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Trifolium atrorubens (Greene) House (TRAT2)  âš˜  Trifolium longipes Nutt. var. atrorubens (Greene) Jeps. (TRLOA2)  âš˜  Trifolium rusbyi Greene var. atrorubens (TRRUA)   

Longstalk Clover: A Native California Wildflower Worth Knowing Meet longstalk clover (Trifolium longipes atrorubens), a charming native perennial that’s been quietly beautifying California’s landscapes long before European settlers arrived. This lesser-known member of the clover family might not be the flashiest wildflower in your garden, but it’s got some serious ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3T4: Status is uncertain but is somewhere between the following rankings: 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. ⚘

Longstalk Clover: A Native California Wildflower Worth Knowing

Meet longstalk clover (Trifolium longipes atrorubens), a charming native perennial that’s been quietly beautifying California’s landscapes long before European settlers arrived. This lesser-known member of the clover family might not be the flashiest wildflower in your garden, but it’s got some serious staying power and ecological street cred.

What Makes Longstalk Clover Special?

As its common name suggests, this clover is distinguished by its notably long flower stalks, which set it apart from its more common cousins. Botanically speaking, you might also encounter this plant under several scientific synonyms including Trifolium atrorubens, but whatever name you use, you’re talking about a true California native.

This perennial forb (that’s plant-speak for a non-woody flowering plant) has the kind of resilience that comes from evolving in California’s diverse climates over thousands of years. Unlike annual flowers that need replanting each year, longstalk clover comes back season after season once established.

Where Does It Call Home?

Longstalk clover is exclusively a California native, making it a perfect choice for gardeners looking to create authentic regional landscapes. Its natural range spans various habitats throughout the Golden State, from coastal areas to inland valleys.

Why Consider Adding It to Your Garden?

Here’s where longstalk clover really shines for the eco-conscious gardener:

  • True native status: Supporting local ecosystems by planting species that belong here
  • Perennial reliability: Once established, it returns year after year
  • Low maintenance: Adapted to local conditions means less fussing required
  • Pollinator potential: Like most clovers, it likely provides nectar for native bees and other pollinators

The Reality Check: What We Don’t Know

Here’s where I need to be honest with you – longstalk clover is something of a mystery plant in the gardening world. While we know it’s a legitimate California native with a respectable conservation status, specific information about its growing requirements, size, and garden performance is surprisingly sparse. This isn’t necessarily a bad thing; it just means you’d be pioneering relatively uncharted gardening territory.

Growing Longstalk Clover: Best Guesses and General Principles

Since specific growing information is limited, here’s what we can extrapolate based on its clover family genetics and California native status:

  • Soil preferences: Likely adaptable to various soil types, as most California natives are
  • Water needs: Probably drought-tolerant once established, following typical California native patterns
  • Sun requirements: Most clovers prefer full sun to partial shade
  • Hardiness: Should be hardy within California’s climate zones

A Word About Sourcing

If you’re intrigued enough to track down longstalk clover for your garden, make sure you’re sourcing it responsibly. Given its somewhat specialized status, you’ll want to work with reputable native plant nurseries that can verify the plant’s provenance and ensure you’re not impacting wild populations.

The Bottom Line

Longstalk clover represents the kind of garden plant that appeals to true native plant enthusiasts – those who value ecological authenticity over flashy garden center displays. While it might not give you the immediate gratification of a showy annual, it offers the deeper satisfaction of supporting local ecosystems and preserving California’s botanical heritage.

Is it right for your garden? If you’re someone who enjoys the detective work of growing lesser-known natives and doesn’t mind a bit of gardening mystery, longstalk clover could be a fascinating addition to your plant collection. Just don’t expect to find a lot of hand-holding information along the way!

Longstalk 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 longipes Nutt. - longstalk clover

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