North America Native Plant

Kings River Buckwheat

Botanical name: Eriogonum nudum var. regirivum

USDA symbol: ERNUR

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Kings River Buckwheat: A Rare California Native Worth Growing Responsibly If you’re passionate about native California plants and want to support local ecosystems, Kings River buckwheat (Eriogonum nudum var. regirivum) might just be the perfect addition to your drought-tolerant garden. This charming perennial herb brings delicate beauty to any landscape ...

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. ⚘

Kings River Buckwheat: A Rare California Native Worth Growing Responsibly

If you’re passionate about native California plants and want to support local ecosystems, Kings River buckwheat (Eriogonum nudum var. regirivum) might just be the perfect addition to your drought-tolerant garden. This charming perennial herb brings delicate beauty to any landscape while providing essential resources for pollinators and wildlife.

Meet the Kings River Buckwheat

Kings River buckwheat is a perennial forb native exclusively to California. As a member of the buckwheat family, this plant produces clusters of tiny white to pinkish flowers that dance above silvery-green basal leaves on tall, slender stems. The flowers create an airy, cloud-like appearance that adds texture and movement to garden spaces.

Where Does It Call Home?

This California endemic grows naturally in the Sierra Nevada foothills and Central Valley regions. You’ll find it thriving in the wild across various California habitats, from grasslands to open woodlands.

Important Conservation Note

Before we dive into growing tips, it’s crucial to know that Kings River buckwheat has a Global Conservation Status of S5T2, indicating it’s a rare variety. If you choose to grow this beautiful native, please ensure you source your plants or seeds from reputable native plant nurseries that practice ethical collection and propagation methods. Never collect from wild populations.

Why Choose Kings River Buckwheat for Your Garden?

This native gem offers several compelling reasons to include it in your landscape:

  • Pollinator magnet: The small flowers attract bees, butterflies, and other beneficial insects, supporting local biodiversity
  • Drought champion: Once established, it requires minimal water, making it perfect for water-wise gardening
  • Low maintenance: This perennial herb practically takes care of itself
  • Unique texture: The delicate flower clusters add an ethereal quality to garden designs
  • Native authenticity: Support California’s natural heritage by growing indigenous plants

Perfect Garden Settings

Kings River buckwheat shines brightest in:

  • Native plant gardens showcasing California flora
  • Xeriscape and drought-tolerant landscapes
  • Mediterranean-style gardens
  • Naturalized wildflower meadows
  • Pollinator gardens supporting local wildlife

Growing Conditions and Care

This adaptable native thrives in USDA hardiness zones 8-10 and prefers conditions that mimic its natural habitat:

  • Sunlight: Full sun for best flowering and compact growth
  • Soil: Well-draining soil is essential; it tolerates poor, rocky, or sandy soils
  • Water: Drought tolerant once established; water sparingly in summer
  • Fertilizer: None needed – native soils provide adequate nutrition

Planting and Care Tips

Growing Kings River buckwheat successfully is surprisingly straightforward:

  • Best planting time: Fall planting allows roots to establish before summer heat
  • Spacing: Allow adequate room for the plant to spread naturally
  • Watering: Water regularly the first year, then reduce to occasional deep watering
  • Maintenance: Cut back spent flower stems after blooming to encourage new growth
  • Mulching: Use gravel or small stones rather than organic mulch to prevent root rot

Supporting Conservation Through Gardening

By choosing to grow Kings River buckwheat responsibly, you’re not just creating a beautiful garden – you’re participating in conservation efforts. This rare variety benefits from cultivation in home gardens, which can serve as genetic reservoirs and help ensure the variety’s long-term survival. Just remember to source your plants ethically and consider sharing seeds with other native plant enthusiasts to spread the conservation love.

Whether you’re creating a dedicated California native garden or simply want to add a touch of local heritage to your landscape, Kings River buckwheat offers beauty, ecological benefits, and the satisfaction of growing something truly special. With minimal care requirements and maximum environmental benefits, it’s a win-win for both gardeners and California’s natural ecosystems.

Kings River 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 nudum Douglas ex Benth. - naked buckwheat

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