North America Native Plant

Sorrel Buckwheat

Botanical name: Eriogonum polycladon

USDA symbol: ERPO4

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Eriogonum densum Greene (ERDE7)  âš˜  Eriogonum vimineum Douglas ex Benth. var. densum (Greene) S. Stokes (ERVID)   

Sorrel Buckwheat: A Southwestern Native Worth Discovering If you’re looking to add authentic Southwestern charm to your garden while supporting local wildlife, sorrel buckwheat (Eriogonum polycladon) might just be the hidden gem you’ve been searching for. This delicate annual forb brings subtle beauty and ecological value to desert landscapes and ...

Rare plant alert!

Region: Conservation status by state

Status: SUSHQ: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘ Currently unrankable due to lack of information or due to substantially conflicting information about status or trends. ⚘

Sorrel Buckwheat: A Southwestern Native Worth Discovering

If you’re looking to add authentic Southwestern charm to your garden while supporting local wildlife, sorrel buckwheat (Eriogonum polycladon) might just be the hidden gem you’ve been searching for. This delicate annual forb brings subtle beauty and ecological value to desert landscapes and native plant gardens across the American Southwest.

What is Sorrel Buckwheat?

Sorrel buckwheat is a native annual forb that belongs to the buckwheat family. As an herbaceous plant without woody stems, it completes its entire life cycle in a single growing season, making it a perfect choice for gardeners who enjoy seasonal variety. You might also encounter this plant under its former scientific names, including Eriogonum densum Greene.

This charming native calls Arizona, New Mexico, Texas, and Utah home, where it has adapted beautifully to the challenging conditions of the southwestern United States.

Why Consider Growing Sorrel Buckwheat?

There are several compelling reasons to include this native plant in your landscape:

  • True native credentials: As a plant indigenous to the lower 48 states, it’s perfectly adapted to regional conditions
  • Pollinator magnet: The small, clustered flowers attract native bees, butterflies, and other beneficial insects
  • Low maintenance: Once established, this drought-tolerant plant requires minimal care
  • Authentic regional character: Adds genuine Southwestern flair to your garden

Important Conservation Note

Before you rush out to find seeds, there’s something important to know: sorrel buckwheat has an undefined conservation status, which means we don’t have complete information about its population stability. If you decide to grow this plant, please source your seeds or plants from reputable native plant nurseries that collect responsibly and sustainably.

Garden Design and Landscape Role

Sorrel buckwheat shines in several garden settings:

  • Desert and xeriscape gardens: Perfect for water-wise landscaping
  • Native wildflower meadows: Adds delicate texture among bolder natives
  • Naturalized areas: Excellent for creating authentic regional plant communities
  • Rock gardens: Thrives in well-draining, sandy conditions

Growing Conditions and Care

The good news for busy gardeners? Sorrel buckwheat is refreshingly undemanding once you understand its preferences:

Sunlight: Full sun is essential for healthy growth and abundant flowering.

Soil: Well-draining sandy or rocky soils work best. This plant absolutely despises wet feet, so avoid heavy clay or constantly moist conditions.

Water: Drought-tolerant once established. In fact, too much water can be more harmful than too little.

Climate: Suitable for USDA hardiness zones 4-9, making it adaptable to a wide range of southwestern growing conditions.

Planting and Care Tips

Since sorrel buckwheat is an annual, you’ll need to replant it each year or allow it to self-seed:

  • Timing: Direct sow seeds in fall for spring germination, mimicking natural cycles
  • Spacing: Allow adequate space for air circulation to prevent fungal issues
  • Watering: Water lightly during establishment, then reduce to minimal supplemental irrigation
  • Maintenance: Very low maintenance once established – nature does most of the work!

Wildlife and Pollinator Benefits

Don’t let its modest appearance fool you – sorrel buckwheat is a valuable contributor to local ecosystems. Its small flowers provide nectar and pollen for native bees, butterflies, and other beneficial insects that are crucial for maintaining healthy garden ecosystems.

Is Sorrel Buckwheat Right for Your Garden?

This native annual is ideal if you:

  • Live in the southwestern United States
  • Want to support local wildlife and pollinators
  • Prefer low-maintenance, drought-tolerant plants
  • Enjoy the subtle beauty of native wildflowers
  • Are creating authentic regional landscapes

However, you might want to look elsewhere if you prefer showy, long-blooming perennials or live outside its native range where other regional natives would be more appropriate.

The Bottom Line

Sorrel buckwheat offers gardeners a chance to grow a truly authentic piece of Southwestern flora while supporting local pollinators and wildlife. While it may not be the showiest plant in your garden, its ecological value and regional authenticity make it a worthy addition to native plant collections. Just remember to source it responsibly and give it the well-draining conditions it craves.

Sometimes the most rewarding garden additions are the ones that whisper rather than shout – and sorrel buckwheat definitely falls into that category.

Sorrel 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 polycladon Benth. - sorrel buckwheat

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