North America Native Plant

James’ Buckwheat

Botanical name: Eriogonum jamesii var. undulatum

USDA symbol: ERJAU

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Eriogonum undulatum Benth. (ERUN7)   

James’ Buckwheat: A Southwestern Native That’s Perfect for Water-Wise Gardens If you’re looking for a tough, beautiful native plant that can handle whatever Mother Nature throws at it, let me introduce you to James’ buckwheat (Eriogonum jamesii var. undulatum). This unassuming little powerhouse might just become your new favorite addition ...

James’ Buckwheat: A Southwestern Native That’s Perfect for Water-Wise Gardens

If you’re looking for a tough, beautiful native plant that can handle whatever Mother Nature throws at it, let me introduce you to James’ buckwheat (Eriogonum jamesii var. undulatum). This unassuming little powerhouse might just become your new favorite addition to a drought-tolerant landscape.

What Is James’ Buckwheat?

James’ buckwheat is a perennial forb herb native to the southwestern United States. Don’t let the herb classification fool you – this isn’t something you’ll be tossing in your pasta sauce. Instead, it’s a vascular plant that stays relatively low to the ground without developing woody stems, making it perfect for ground cover applications.

You might also see this plant listed under its synonym, Eriogonum undulatum, but rest assured – it’s the same wonderful species that’s been thriving in harsh southwestern conditions for millennia.

Where Does James’ Buckwheat Call Home?

This resilient native has made itself at home across Arizona, New Mexico, and Texas, where it’s learned to thrive in some pretty challenging conditions. Its natural range tells you everything you need to know about its personality – this is a plant that doesn’t need babying.

Why Your Garden Will Love James’ Buckwheat

Here’s where James’ buckwheat really shines. This compact, mounding plant produces clusters of small white to pink flowers that create a delicate, cloud-like effect in the garden. The silvery-green foliage provides a beautiful backdrop that looks good even when the plant isn’t blooming.

But the real magic happens when pollinators discover your James’ buckwheat. Bees and butterflies absolutely love the nectar-rich flowers, making this an excellent choice for anyone wanting to support local pollinator populations.

Perfect Garden Companions and Uses

James’ buckwheat is a natural fit for:

  • Rock gardens where its compact form can nestle between stones
  • Xerophytic (dry-loving) garden designs
  • Native plant landscapes
  • Ground cover in areas where you want something low-maintenance but attractive
  • Water-wise landscaping projects

Growing James’ Buckwheat Successfully

The best part about James’ buckwheat? It’s incredibly easy to grow if you give it what it wants – and what it wants is pretty simple.

Light and Location

Full sun is non-negotiable for this sun-lover. James’ buckwheat has evolved in bright, open spaces and won’t be happy in shade.

Soil Requirements

Well-drained soil is absolutely critical. This plant would rather be a little thirsty than have wet feet. If you have clay soil, consider amending it with sand or gravel, or plant James’ buckwheat in raised beds.

Hardiness

James’ buckwheat is hardy in USDA zones 5-9, making it suitable for a wide range of climates beyond its native southwestern range.

Watering Wisdom

Here’s where many gardeners go wrong – they kill this drought-tolerant native with kindness (aka too much water). Once established, James’ buckwheat needs very little supplemental irrigation. During its first year, give it occasional deep watering to help roots establish, then step back and let nature take over.

Planting and Care Tips

The best times to plant James’ buckwheat are spring or fall when temperatures are more moderate. Here are some key care guidelines:

  • Plant in spring after the last frost or in early fall
  • Space plants according to their mature size to allow for good air circulation
  • Water regularly the first year, then reduce frequency dramatically
  • Avoid fertilizing – this native prefers lean soils
  • Deadhead spent flowers if you want to prevent self-seeding

The Bottom Line

James’ buckwheat is one of those wonderful plants that gives you maximum beauty for minimal effort – as long as you resist the urge to fuss over it. It’s perfect for gardeners who want to support native ecosystems, create habitat for pollinators, and enjoy a beautiful, low-maintenance landscape.

If you’re gardening in the Southwest or have similar growing conditions elsewhere, James’ buckwheat deserves a spot in your water-wise garden. Just remember: plant it, establish it with some initial care, then let this tough native do what it does best – thrive with minimal intervention.

James’ 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 jamesii Benth. - James' buckwheat

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