North America Native Plant

Bullfrog Mountain Pea

Botanical name: Lathyrus hitchcockianus

USDA symbol: LAHI4

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Bullfrog Mountain Pea: A Rare Native Gem Worth Protecting Meet the Bullfrog Mountain pea (Lathyrus hitchcockianus), a charming native wildflower that’s as rare as it is beautiful. This little-known perennial herb represents one of nature’s more exclusive offerings, found only in select locations across California and Nevada. But before you ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Bullfrog Mountain Pea: A Rare Native Gem Worth Protecting

Meet the Bullfrog Mountain pea (Lathyrus hitchcockianus), a charming native wildflower that’s as rare as it is beautiful. This little-known perennial herb represents one of nature’s more exclusive offerings, found only in select locations across California and Nevada. But before you start dreaming of adding this botanical treasure to your garden, there’s something important you need to know about its conservation status.

A Plant That Needs Our Help

Here’s the thing about Bullfrog Mountain pea – it’s incredibly rare. With a Global Conservation Status of S2 (Imperiled), this species is considered at serious risk due to extreme rarity. We’re talking about only 6 to 20 known occurrences in the wild, with perhaps just 1,000 to 3,000 individual plants remaining in existence. That makes every single plant precious.

If you’re considering growing this species, please only source it from reputable native plant nurseries that propagate from ethically collected seeds or cuttings. Never collect from wild populations – these plants need every individual they can get to survive.

Where You’ll Find It in the Wild

This native American species calls California and Nevada home, though you won’t stumble across it on your average nature hike. Its limited distribution makes it a true regional specialty, perfectly adapted to the unique conditions of its mountain habitat.

What Makes It Special

As a member of the pea family, Bullfrog Mountain pea is a perennial forb – essentially a soft-stemmed flowering plant that comes back year after year. Unlike woody shrubs or trees, it dies back to ground level each winter and re-emerges in spring from buds at or below the soil surface.

Like its Lathyrus cousins, this plant likely produces the characteristic sweet pea-like flowers that make this genus so beloved. These blooms not only add beauty to the landscape but also provide valuable nectar sources for native pollinators, including bees and butterflies.

Growing Bullfrog Mountain Pea Responsibly

If you’re lucky enough to obtain responsibly sourced Bullfrog Mountain pea, here’s what you need to know:

  • Garden role: Perfect for native plant gardens, restoration projects, or specialized wildflower collections
  • Best suited for: Gardeners committed to conservation who want to help preserve rare species
  • Hardiness: Likely suited for USDA zones 8-10, matching its California-Nevada range
  • Companions: Pair with other California-Nevada natives for an authentic regional display

Care Tips for Success

While specific growing requirements for this rare species aren’t well-documented, you can follow general guidelines for native Lathyrus species:

  • Provide well-draining soil – most mountain natives hate soggy feet
  • Offer moderate water during the growing season
  • Allow natural dormancy periods
  • Avoid heavy fertilization, which can harm native plants
  • Be patient – rare plants often take time to establish

The Conservation Gardener’s Choice

Growing Bullfrog Mountain pea isn’t just about adding a unique plant to your collection – it’s about participating in conservation. Every responsibly grown plant represents hope for this imperiled species. Your garden could serve as a genetic reservoir, helping ensure that future generations can enjoy this botanical treasure.

Just remember: with great rarity comes great responsibility. Only obtain plants from ethical sources, never collect from the wild, and consider sharing seeds or propagation material with other conservation-minded gardeners. Together, we can help ensure that the Bullfrog Mountain pea doesn’t hop away into extinction.

Bullfrog Mountain 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 hitchcockianus Barneby & Reveal - Bullfrog Mountain pea

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