North America Native Plant

Olancha Peak Buckwheat

Botanical name: Eriogonum wrightii var. olanchense

USDA symbol: ERWRO

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Olancha Peak Buckwheat: A Rare California Native Worth Protecting Meet one of California’s most exclusive native plants: the Olancha Peak buckwheat (Eriogonum wrightii var. olanchense). This isn’t your run-of-the-mill garden center find – it’s a botanical treasure that calls only a tiny corner of California home. What Makes This Plant ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is 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) ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Olancha Peak Buckwheat: A Rare California Native Worth Protecting

Meet one of California’s most exclusive native plants: the Olancha Peak buckwheat (Eriogonum wrightii var. olanchense). This isn’t your run-of-the-mill garden center find – it’s a botanical treasure that calls only a tiny corner of California home.

What Makes This Plant Special?

The Olancha Peak buckwheat is a perennial forb, meaning it’s an herbaceous plant without woody stems that comes back year after year. As part of the famous buckwheat family, it likely produces the characteristic small, clustered flowers that pollinators absolutely adore, though in delicate shades of white to pink rather than the bold yellows of some of its cousins.

Where Does It Call Home?

This rare variety is endemic to California, specifically the Olancha Peak region. Its extremely limited geographic range makes it one of the state’s botanical gems – and also one of its most vulnerable native plants.

Important Conservation Alert

Before you get too excited about adding this beauty to your garden, there’s something crucial you need to know: Olancha Peak buckwheat has a Global Conservation Status of S5T2, indicating it’s quite rare and potentially at risk. This means if you’re determined to grow it, you absolutely must source it responsibly from reputable native plant nurseries that propagate rather than wild-collect their stock.

Is This Plant Right for Your Garden?

Honestly? Probably not – and that’s okay! Here’s why this might not be the best choice for most gardeners:

  • Extremely limited availability due to its rarity
  • Specialized growing requirements that aren’t well-documented
  • Better suited for conservation gardens and botanical collections
  • Ethical sourcing can be challenging

If You’re Still Interested: Growing Tips

Should you find responsibly sourced Olancha Peak buckwheat, here’s what it likely needs based on its native habitat:

  • Sunlight: Full sun exposure
  • Soil: Extremely well-draining soil – think rocky, sandy, or gravelly
  • Water: Minimal irrigation once established; drought-tolerant
  • Climate: Likely hardy in USDA zones 8-10
  • Placement: Perfect for rock gardens or specialized native plant collections

The Pollinator Connection

Like other buckwheats, this rare variety likely supports native pollinators, including specialized bees and butterflies. However, given its limited range, its pollinator relationships are probably just as specialized and rare as the plant itself.

Better Alternatives for Most Gardens

If you’re drawn to the idea of growing native buckwheats, consider these more readily available and less conservation-sensitive options:

  • California buckwheat (Eriogonum fasciculatum)
  • St. Catherine’s lace (Eriogonum giganteum)
  • Coast buckwheat (Eriogonum latifolium)

The Bottom Line

Olancha Peak buckwheat represents the fascinating diversity of California’s native flora, but it’s best admired from a conservation perspective rather than as a garden plant for most of us. If you’re passionate about rare natives and can source it ethically, it could be a meaningful addition to a specialized collection. Otherwise, celebrate this plant by supporting habitat conservation efforts and choosing more common native buckwheats that offer similar benefits without the conservation concerns.

Sometimes the most responsible thing we can do as gardeners is appreciate a plant’s wild beauty and choose alternatives that won’t put rare species at further risk.

Olancha Peak 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 wrightii Torr. ex Benth. - bastardsage

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