North America Native Plant

Lewis’ Buckwheat

Botanical name: Eriogonum lewisii

USDA symbol: ERLE13

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Lewis’ Buckwheat: A Rare Nevada Native Worth Protecting If you’ve stumbled across Lewis’ buckwheat (Eriogonum lewisii) in your native plant research, you’ve discovered one of Nevada’s botanical treasures – and quite possibly one of its best-kept secrets. This perennial forb is so rare that even plant nerds have to do ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ 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) ⚘ 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 ⚘

Lewis’ Buckwheat: A Rare Nevada Native Worth Protecting

If you’ve stumbled across Lewis’ buckwheat (Eriogonum lewisii) in your native plant research, you’ve discovered one of Nevada’s botanical treasures – and quite possibly one of its best-kept secrets. This perennial forb is so rare that even plant nerds have to do some serious sleuthing to learn about it!

What Makes Lewis’ Buckwheat Special?

Lewis’ buckwheat is a native perennial that belongs to the diverse Eriogonum genus, commonly known as wild buckwheats. As a forb, it’s an herbaceous plant without woody stems, putting down roots (literally) as part of Nevada’s native plant community. Unlike its showier cousins that grace many western gardens, this particular buckwheat keeps a much lower profile.

Where Does It Call Home?

This Nevada native has a very limited range, found only within the Silver State’s borders. Its restricted distribution is part of what makes it so special – and so vulnerable.

A Word of Caution: Rarity Matters

Here’s where things get serious, fellow plant enthusiasts. Lewis’ buckwheat carries a Global Conservation Status of S2S3Q, which indicates it’s rare and its exact status is somewhat uncertain. This means we’re dealing with a plant that needs our protection, not our shovels.

If you’re considering adding this plant to your garden:

  • Only source it from reputable native plant nurseries that can guarantee responsibly propagated material
  • Never collect plants or seeds from wild populations
  • Consider whether you truly have the right growing conditions and expertise
  • Think about supporting conservation efforts instead of or in addition to cultivation

The Growing Challenge

Unfortunately, detailed cultivation information for Lewis’ buckwheat is as scarce as the plant itself. What we do know is that it’s a perennial forb adapted to Nevada’s unique growing conditions. Without specific data on its preferred soil types, water requirements, or hardiness zones, successfully growing this plant becomes quite the gardening adventure – and not necessarily one we’d recommend for most home gardeners.

Consider These Alternatives

If you’re drawn to the idea of growing native buckwheats, consider these more readily available and better-documented Nevada natives:

  • Desert buckwheat (Eriogonum deserticola)
  • Sulphur flower (Eriogonum umbellatum)
  • Other local Eriogonum species that are more common and better suited to cultivation

Supporting Conservation

Sometimes the best way to show love for a plant is to admire it from afar. Lewis’ buckwheat reminds us that not every beautiful native species is meant for our gardens. Instead, we can support its conservation by:

  • Supporting local botanical research and conservation organizations
  • Choosing more common native alternatives for our gardens
  • Spreading awareness about Nevada’s rare plant species
  • Participating in habitat restoration projects

Lewis’ buckwheat may be elusive, but it serves as a perfect reminder of why native plant conservation matters. Sometimes the most meaningful way to celebrate a plant is simply knowing it exists and doing our part to keep it that way.

Lewis’ Buckwheat

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Polygonales

Family

Polygonaceae Juss. - Buckwheat family

Genus

Eriogonum Michx. - buckwheat

Species

Eriogonum lewisii Reveal - Lewis' buckwheat

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