North America Native Plant

Intermountain Indian Breadroot

Botanical name: Pediomelum megalanthum var. megalanthum

USDA symbol: PEMEM2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Psoralea megalantha Wooton & Standl. (PSME2)   

Growing Intermountain Indian Breadroot: A Hidden Gem of the Southwest If you’re looking for a drought-tough native plant that brings both beauty and ecological value to your garden, let me introduce you to the Intermountain Indian breadroot (Pediomelum megalanthum var. megalanthum). This unassuming perennial forb might not be the showiest ...

Rare plant alert!

Region: Conservation status by state

Status: S4?T3T4: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘

Growing Intermountain Indian Breadroot: A Hidden Gem of the Southwest

If you’re looking for a drought-tough native plant that brings both beauty and ecological value to your garden, let me introduce you to the Intermountain Indian breadroot (Pediomelum megalanthum var. megalanthum). This unassuming perennial forb might not be the showiest plant in the garden center, but it’s a true survivor that deserves a spot in water-wise landscapes across the American Southwest.

What Makes This Plant Special?

The Intermountain Indian breadroot is a native perennial that calls the high desert regions of Arizona, Colorado, New Mexico, and Utah home. As a member of the pea family, it produces clusters of small, purple to violet flowers that are absolutely beloved by pollinators. The silvery-green compound leaves provide an attractive backdrop that complements both the blooms and other native plants.

This hardy forb grows as a low, spreading groundcover that typically reaches 6-18 inches tall and can spread 12-24 inches wide. Don’t expect rapid growth – this is a plant that takes its time establishing deep roots, but once it does, it’s incredibly resilient.

Why Gardeners Love (and Should Respect) This Plant

Here’s where things get interesting: the Intermountain Indian breadroot has a conservation status that suggests it may be uncommon to rare in parts of its native range. This means if you decide to grow it, you’ll want to source your plants or seeds responsibly from reputable native plant nurseries that don’t collect from wild populations.

So why consider growing it despite this consideration? Here are the compelling reasons:

  • Exceptional drought tolerance once established
  • Attracts native bees, butterflies, and other beneficial insects
  • Requires virtually no maintenance after the first year
  • Helps support local ecosystem health
  • Perfect for xeriscape and native plant gardens

Where Does It Thrive?

This plant is happiest in USDA hardiness zones 4-8, making it suitable for a wide range of climates from mountain meadows to high desert plains. It’s particularly well-suited for:

  • Xeriscape gardens
  • Native plant landscapes
  • Wildflower meadows
  • Pollinator gardens
  • Rock gardens with well-draining soil

Growing Conditions That Make It Happy

The Intermountain Indian breadroot isn’t fussy, but it does have some preferences. Give it full sun and well-draining soil, and you’re most of the way there. This plant absolutely despises soggy conditions, so avoid areas where water tends to pool or clay soils that don’t drain well.

It’s adapted to lean, rocky soils and doesn’t need rich, amended earth to thrive. In fact, too much fertility can make it grow too lush and reduce its drought tolerance.

Planting and Care Tips

Getting started with Intermountain Indian breadroot requires a bit of patience, but it’s worth the wait:

  • Direct seeding is often more successful than transplanting
  • Plant seeds in fall for spring germination
  • Water regularly the first year to help establish deep roots
  • After year one, water only during extended dry periods
  • Avoid fertilizing – this plant prefers lean conditions
  • Allow flowers to go to seed to support wildlife and potential self-seeding

The Pollinator Connection

One of the most compelling reasons to grow this plant is its value to native pollinators. The pea-like flowers are particularly attractive to native bees, which have co-evolved with plants in the pea family. Butterflies also visit the blooms, making your garden a more diverse and ecologically rich space.

Is This Plant Right for Your Garden?

The Intermountain Indian breadroot is perfect if you’re looking to create a low-maintenance, water-wise garden that supports local wildlife. It’s not the right choice if you prefer instant gratification or lush, high-water landscapes. But if you appreciate subtle beauty, ecological value, and plants with interesting stories, this native gem might be exactly what your garden needs.

Just remember to source it responsibly and give it the well-draining conditions it craves. With a little patience and the right growing conditions, you’ll have a beautiful, sustainable addition to your landscape that connects your garden to the wild spaces of the American Southwest.

Intermountain Indian Breadroot

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

Pediomelum Rydb. - Indian breadroot

Species

Pediomelum megalanthum (Wooton & Standl.) Rydb. - Intermountain Indian breadroot

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