North America Native Plant

Turkeypeas

Botanical name: Astragalus nuttallianus var. imperfectus

USDA symbol: ASNUI

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Turkeypeas: A Mysterious Native Annual Worth Knowing About If you’ve ever wondered about the more obscure native plants hiding in America’s Southwest, let me introduce you to turkeypeas (Astragalus nuttallianus var. imperfectus). This little-known annual is one of those botanical gems that flies under the radar, even among dedicated native ...

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. ⚘

Turkeypeas: A Mysterious Native Annual Worth Knowing About

If you’ve ever wondered about the more obscure native plants hiding in America’s Southwest, let me introduce you to turkeypeas (Astragalus nuttallianus var. imperfectus). This little-known annual is one of those botanical gems that flies under the radar, even among dedicated native plant enthusiasts.

What Exactly Are Turkeypeas?

Turkeypeas belong to the vast Astragalus genus, commonly known as milkvetches or locoweed. As an annual plant, this variety completes its entire life cycle within a single growing season, making it quite different from the perennial plants that often dominate our gardens.

This particular variety, scientifically known as Astragalus nuttallianus var. imperfectus, is native to the lower 48 states and represents just one small piece of our continent’s incredible plant diversity.

Where Does It Call Home?

Turkeypeas have carved out their niche across four southwestern states: Arizona, California, Nevada, and Utah. This distribution suggests they’re well-adapted to the unique growing conditions of the American Southwest, though specific habitat preferences remain something of a mystery.

The Challenge of Growing Turkeypeas

Here’s where things get interesting (and a bit frustrating for us gardening enthusiasts): turkeypeas are one of those native plants that seem to prefer keeping their secrets. Information about their specific growing requirements, appearance, and garden performance is remarkably scarce.

What we do know is that as a native annual, turkeypeas would theoretically make a good addition to:

  • Native plant gardens focused on regional species
  • Wildlife habitat restoration projects
  • Low-maintenance landscapes that celebrate local biodiversity

The Reality Check

If you’re hoping to add turkeypeas to your garden, you’ll face some practical challenges. This plant appears to be more of a botanical curiosity than a readily available garden center option. The lack of detailed growing information, combined with limited commercial availability, means turkeypeas might be better appreciated in their wild habitats than in home gardens.

Why This Matters for Native Plant Lovers

While turkeypeas might not become your next garden star, they represent something important: the incredible diversity of native plants that exist beyond the popular choices we see everywhere. Every native species, no matter how obscure, plays a role in supporting local ecosystems.

If you’re passionate about supporting southwestern native plants, consider focusing on their better-documented relatives in the Astragalus family, or explore other native annuals from your region that come with clear growing guidelines and proven garden performance.

The Bottom Line

Turkeypeas remind us that nature still holds plenty of mysteries, even in our well-documented modern world. While they might not be the easiest native plant to grow or find, they’re a fascinating example of the specialized varieties that make up our native plant heritage. Sometimes the most valuable plants are the ones that teach us humility and spark our curiosity about the natural world around us.

Turkeypeas

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

Astragalus L. - milkvetch

Species

Astragalus nuttallianus DC. - smallflowered milkvetch

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