North America Native Plant

Cache Valley Buckwheat

Botanical name: Eriogonum loganum

USDA symbol: ERLO3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Eriogonum brevicaule Nutt. var. loganum (A. Nelson) S.L. Welsh (ERBRL2)   

Cache Valley Buckwheat: A Rare Utah Native Worth Knowing About If you’re a native plant enthusiast with a passion for rare species, Cache Valley buckwheat (Eriogonum loganum) might have caught your attention. This little-known perennial forb is one of Utah’s botanical treasures, though it’s not exactly what you’d call a ...

Rare plant alert!

Region: Conservation status by state

Status: S2Q: 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) ⚘

Cache Valley Buckwheat: A Rare Utah Native Worth Knowing About

If you’re a native plant enthusiast with a passion for rare species, Cache Valley buckwheat (Eriogonum loganum) might have caught your attention. This little-known perennial forb is one of Utah’s botanical treasures, though it’s not exactly what you’d call a mainstream garden plant. Let’s dive into what makes this buckwheat special and whether it belongs in your landscape.

What is Cache Valley Buckwheat?

Cache Valley buckwheat is a native perennial forb, meaning it’s a non-woody plant that comes back year after year. As part of the vast Eriogonum genus (commonly known as buckwheats), it shares family traits with more familiar species, but this particular variety has carved out its own unique niche in Utah’s landscape.

You might also see it listed under its scientific synonym Eriogonum brevicaule var. loganum in some botanical references, which can make tracking down information about this elusive species a bit like a botanical treasure hunt.

Where Does It Call Home?

This buckwheat is a true Utah endemic, found exclusively within the state’s borders. Its common name gives away its primary stomping grounds – the Cache Valley region. This limited geographic distribution makes it a special find for native plant collectors and conservationists alike.

The Rarity Factor: Why You Should Care

Here’s where things get interesting (and a bit concerning). Cache Valley buckwheat carries a Global Conservation Status of S2Q, which indicates some level of rarity or conservation concern. While the exact details of its status aren’t fully defined, this designation suggests that the species may be uncommon or facing potential threats.

If you’re considering adding this plant to your garden, it’s crucial to source it responsibly. Never collect plants from the wild, and only purchase from reputable native plant nurseries that can guarantee their stock comes from ethical propagation practices.

Garden Potential and Growing Considerations

Unfortunately, detailed growing information for Cache Valley buckwheat is scarce, which isn’t uncommon for rare native species. However, we can make some educated guesses based on its buckwheat family characteristics and Utah origins:

  • As a perennial forb, it likely prefers well-draining soils
  • Most buckwheats thrive in full sun conditions
  • Being native to Utah, it’s probably adapted to dry conditions and temperature extremes
  • Like other Eriogonum species, it may be drought-tolerant once established

Should You Plant It?

This is a tricky question with Cache Valley buckwheat. While supporting rare native species is admirable, the limited availability and conservation concerns mean this isn’t a plant for every gardener. Consider these factors:

Reasons to proceed with caution:

  • Limited availability from ethical sources
  • Potential conservation concerns
  • Minimal growing information available
  • Very restricted natural range

If you do decide to grow it:

  • Only source from reputable native plant nurseries
  • Verify that plants were propagated, not wild-collected
  • Consider it more of a conservation effort than a typical garden plant
  • Share seeds or cuttings responsibly with other conservation-minded gardeners

Alternative Buckwheat Options

If you’re drawn to the buckwheat family but want something more readily available, consider these more common Eriogonum species that offer similar benefits:

  • Wild buckwheat (Eriogonum fasciculatum)
  • Sulfur flower (Eriogonum umbellatum)
  • Desert trumpet (Eriogonum inflatum)

These alternatives can provide the drought tolerance and pollinator benefits associated with buckwheats while being more sustainable garden choices.

The Bottom Line

Cache Valley buckwheat represents the fascinating diversity of our native flora, but it’s probably not destined for widespread garden use. If you’re a serious native plant collector with access to ethically sourced plants, it could be a worthy addition to a specialized collection. For most gardeners, however, focusing on more common native buckwheats will provide similar ecological benefits without the conservation concerns.

Sometimes the most beautiful way to appreciate a rare plant is to learn about it, support its conservation, and choose more sustainable alternatives for our home landscapes. Cache Valley buckwheat reminds us that not every native plant needs to be in every garden – sometimes supporting their wild populations is the better choice.

Cache Valley 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 loganum A. Nelson - Cache Valley buckwheat

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