North America Native Plant

Nevada Pea

Botanical name: Lathyrus lanszwertii var. aridus

USDA symbol: LALAA

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Synonyms: Lathyrus lanszwertii Kellogg ssp. aridus (Piper) Bradshaw (LALAA6)   

Nevada Pea: A Native Western Wildflower Worth Getting to Know If you’re looking to add some authentic western charm to your native garden, the Nevada pea (Lathyrus lanszwertii var. aridus) might just be the unsung hero you’ve been searching for. This perennial wildflower brings a touch of the wild west ...

Rare plant alert!

Region: Conservation status by state

Status: S4S5T3T4: 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. ⚘ 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 ⚘ 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. ⚘

Nevada Pea: A Native Western Wildflower Worth Getting to Know

If you’re looking to add some authentic western charm to your native garden, the Nevada pea (Lathyrus lanszwertii var. aridus) might just be the unsung hero you’ve been searching for. This perennial wildflower brings a touch of the wild west to cultivated spaces, though it’s definitely more of a specialized choice than a mainstream garden staple.

What Exactly Is Nevada Pea?

Nevada pea is a native perennial forb that belongs to the pea family. Unlike its woody cousins, this herbaceous plant lacks significant woody tissue above ground and produces new growth from buds at or below the soil surface each year. You might also see it listed under its scientific synonym, Lathyrus lanszwertii Kellogg ssp. aridus, but don’t let the botanical jargon intimidate you!

Where Does It Call Home?

This native beauty has made itself at home across the western United States, naturally occurring in California, Idaho, Oregon, and Washington. It’s perfectly adapted to the unique growing conditions found in these diverse western landscapes, from coastal areas to inland valleys.

Is Nevada Pea Right for Your Garden?

Here’s where things get a bit tricky. Nevada pea isn’t your typical garden center find, and there’s a good reason for that. This plant has a Global Conservation Status that suggests it’s not exactly common in the wild. While it’s not critically endangered, it’s not something you’ll stumble across in every meadow either.

If you’re considering adding Nevada pea to your landscape, here are some things to keep in mind:

  • It’s a true native plant, making it an excellent choice for authentic regional gardens
  • As a perennial, it will return year after year once established
  • Its rarity means you should only source it from reputable native plant nurseries that propagate responsibly
  • Limited availability means it’s better suited for dedicated native plant enthusiasts than casual gardeners

Growing Nevada Pea Successfully

Unfortunately, specific growing information for this particular variety is limited, which is often the case with specialized native plants. However, based on its natural range and family characteristics, Nevada pea likely prefers:

  • Well-draining soils typical of western landscapes
  • Full sun to partial shade conditions
  • Moderate water during establishment, then reduced irrigation once established
  • USDA hardiness zones that correspond to its native range (likely zones 6-9, though this should be verified with your local native plant society)

The Bottom Line

Nevada pea is definitely a know what you’re getting into kind of plant. It’s not the easiest choice for beginners, and its limited availability makes it more of a collector’s item than a landscape workhorse. However, for dedicated native plant gardeners in its natural range, it offers the satisfaction of growing something truly regional and authentic.

If you’re set on including Nevada pea in your garden, connect with local native plant societies, botanical gardens, or specialized native plant nurseries. They’ll be your best resource for both sourcing the plant responsibly and getting specific growing advice for your area.

For gardeners looking for easier-to-grow alternatives that offer similar native appeal, consider asking your local extension office about other native legumes or wildflowers that might be more readily available and better documented for home cultivation in your specific region.

Nevada Pea

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

Lathyrus L. - pea

Species

Lathyrus lanszwertii Kellogg - Nevada pea

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