North America Native Plant

Payson’s Pepperweed

Botanical name: Lepidium paysonii

USDA symbol: LEPA42

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Payson’s Pepperweed: A Rare Native Gem for Western Gardens Meet Payson’s pepperweed (Lepidium paysonii), a charming little native that’s as tough as the rugged western landscapes it calls home. This perennial forb might not win any beauty contests, but it’s got character in spades and plays an important role in ...

Rare plant alert!

Region: Conservation status by state

Status: S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘

Payson’s Pepperweed: A Rare Native Gem for Western Gardens

Meet Payson’s pepperweed (Lepidium paysonii), a charming little native that’s as tough as the rugged western landscapes it calls home. This perennial forb might not win any beauty contests, but it’s got character in spades and plays an important role in its native ecosystems.

Where You’ll Find This Western Native

Payson’s pepperweed is a true westerner, native to just two states: Idaho and Wyoming. This limited geographic distribution makes it a special find for native plant enthusiasts in these regions. The plant has adapted perfectly to the challenging conditions of the American West, thriving in areas where many other plants would struggle.

What Does Payson’s Pepperweed Look Like?

Don’t expect flashy blooms with this one! Payson’s pepperweed is a low-growing herbaceous perennial that produces clusters of small white flowers. As a forb, it lacks woody tissue and stays relatively close to the ground, making it perfect for filling in spaces between larger plants or creating subtle ground cover.

Important Rarity Alert

Before you start hunting for seeds or plants, here’s something crucial to know: Payson’s pepperweed has a Global Conservation Status of S3?, which indicates there may be rarity concerns. This means if you’re interested in growing this native beauty, you should only source it from reputable nurseries that propagate their plants responsibly rather than collecting from wild populations.

Why Grow Payson’s Pepperweed?

If you can source it responsibly, here’s why this little native might deserve a spot in your garden:

  • True native credentials: It’s authentically native to the American West
  • Drought tolerant: Once established, it thrives with minimal water
  • Low maintenance: Perfect for gardeners who prefer a hands-off approach
  • Pollinator support: Small flowers attract beneficial insects and pollinators
  • Ecological value: Supports local wildlife and ecosystem health

Growing Conditions and Care

Payson’s pepperweed is refreshingly easy-going once you understand its preferences:

  • Sunlight: Full sun is best
  • Soil: Well-drained soils are essential – it hates soggy feet
  • Water: Drought tolerant once established; minimal watering needed
  • Hardiness: Suitable for USDA zones 4-7
  • Maintenance: Very low maintenance – just plant and let it do its thing

Perfect Garden Matches

This native works beautifully in:

  • Native plant gardens focused on regional flora
  • Rock gardens where drainage is excellent
  • Xerophytic (dry climate) garden designs
  • Restoration projects in appropriate regions
  • Natural landscaping that mimics local ecosystems

The Bottom Line

Payson’s pepperweed might not be the showiest plant in your garden, but it brings authentic western character and ecological value to the right setting. If you’re gardening in Idaho or Wyoming and can source it responsibly from propagated stock, it’s worth considering for its drought tolerance, low maintenance requirements, and native credentials. Just remember – always choose nursery-propagated plants over wild-collected specimens to help protect this potentially rare species in its natural habitat.

Sometimes the most valuable plants in our gardens are the quiet ones that simply belong there, supporting the web of life that makes our local ecosystems thrive.

Payson’s Pepperweed

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Capparales

Family

Brassicaceae Burnett - Mustard family

Genus

Lepidium L. - pepperweed

Species

Lepidium paysonii Rollins - Payson's pepperweed

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