Native Plants

Eastwood’s Buckwheat

Eriogonum eastwoodianum

USDA symbol: EREA2

annual forb

Lower 48 states: native

Meet Eastwood’s buckwheat (Eriogonum eastwoodianum), one of California’s most elusive native wildflowers. If you’ve never heard of this little plant, you’re not alone – it’s so rare that even seasoned botanists might go their entire careers without spotting one in the wild. Eastwood’s buckwheat is an annual forb, which means ...

Eastwood’s Buckwheat may be listed as rare in your area.
Global Conservation Status

Status: S1S2 | Imperiled: Extremely rare. Typically 6 to 20 occurrences or 1,000 to 3,000 remaining individuals.

Eastwood’s Buckwheat: A Rare California Native Worth Protecting

Meet Eastwood’s buckwheat (Eriogonum eastwoodianum), one of California’s most elusive native wildflowers. If you’ve never heard of this little plant, you’re not alone – it’s so rare that even seasoned botanists might go their entire careers without spotting one in the wild.

What Makes This Plant Special?

Eastwood’s buckwheat is an annual forb, which means it completes its entire life cycle in just one growing season and lacks the woody stems you’d find on shrubs or trees. As a member of the buckwheat family, it’s related to more familiar garden plants, but this particular species has chosen the path less traveled – way less traveled.

Where Does It Call Home?

This native Californian is found exclusively in the Golden State, though exactly where remains somewhat mysterious due to its extreme rarity. The plant carries a conservation status of S1S2, indicating it’s critically imperiled to imperiled – scientist-speak for we need to keep a very close eye on this one.

  • Species observed
  • No observations

The Rarity Reality Check

Here’s where we need to have a serious conversation. Eastwood’s buckwheat isn’t just uncommon – it’s genuinely rare enough that you shouldn’t be planting it in your garden even if you could find it. Plants with this level of rarity need to stay in their natural habitats where they belong, and any seeds or plants should only be handled by conservation professionals.

If you’re drawn to the idea of growing native buckwheats (and who isn’t?), there are plenty of other Eriogonum species that would love to call your garden home without the conservation concerns.

What We Know (And Don’t Know)

The challenge with writing about Eastwood’s buckwheat is that there’s still so much we don’t know about it. Being an annual forb, it likely has delicate flowers and an herbaceous growth habit, but specific details about its appearance, growing conditions, and ecological relationships remain largely undocumented.

What we do know is that it’s a legitimate native species (not a synonym for something else) and that it deserves our protection and respect.

How You Can Help

Instead of trying to grow this rare beauty, consider these ways to support it:

  • Support California native plant conservation organizations
  • Choose other native buckwheat species for your garden
  • Report any suspected sightings to local botanists or conservation groups
  • Advocate for habitat protection in areas where rare plants might occur

Better Alternatives for Your Garden

If you’re interested in supporting pollinators and birds with native buckwheats, consider these more common California species instead:

  • California buckwheat (Eriogonum fasciculatum)
  • Wild buckwheat (Eriogonum grande var. rubescens)
  • Coast buckwheat (Eriogonum latifolium)

These alternatives will give you the satisfaction of growing native plants while leaving the rare ones safely in their natural homes where they belong. Sometimes the best way to love a plant is to admire it from afar and work to protect the wild spaces it calls home.

Eriogonum eastwoodianum is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Eriogonum eastwoodianum is also known as:

Eriogonum covilleanum ssp. adsurgens | USDA symbol: ERCOA5

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Caryophyllidae
Order: Polygonales
Family: Polygonaceae Juss. - Buckwheat family
Genus: Eriogonum Michx. - buckwheat

Species: Eriogonum eastwoodianum J.T. Howell - Eastwood's buckwheat

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