North America Native Plant

Slender Buckwheat

Botanical name: Eriogonum microthecum var. lapidicola

USDA symbol: ERMIL

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Slender Buckwheat: A Rocky Mountain Native That’s Perfect for Drought-Tolerant Gardens Meet the slender buckwheat (Eriogonum microthecum var. lapidicola), a charming little native shrub that’s about to become your new favorite low-maintenance garden companion. Don’t let its unassuming name fool you – this perennial powerhouse packs a lot of personality ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3T4: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘ 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. ⚘

Slender Buckwheat: A Rocky Mountain Native That’s Perfect for Drought-Tolerant Gardens

Meet the slender buckwheat (Eriogonum microthecum var. lapidicola), a charming little native shrub that’s about to become your new favorite low-maintenance garden companion. Don’t let its unassuming name fool you – this perennial powerhouse packs a lot of personality into its compact frame!

What Makes Slender Buckwheat Special?

This delightful native plant calls the rocky slopes and mountainous regions of California, Nevada, and Utah home. As a true child of the American Southwest, it’s perfectly adapted to tough conditions that would make other plants throw in the trowel. The slender buckwheat is a low-growing shrub that typically stays under 1.5 feet tall, making it an ideal choice for gardeners who want big impact without the big commitment.

A Conservation-Conscious Choice

Before we dive into growing tips, here’s something important to know: slender buckwheat has a Global Conservation Status of S5T3T4, which means it deserves our attention and respect. While it’s not critically endangered, this status reminds us to be mindful gardeners. If you decide to add this beauty to your landscape, make sure you source it from reputable nurseries that propagate plants responsibly rather than collecting from wild populations.

Why Your Garden (and Local Wildlife) Will Love It

Slender buckwheat isn’t just a pretty face – it’s a pollinator magnet! Those clusters of small white to pinkish flowers are like tiny beacons for bees, butterflies, and other beneficial insects. The blooms appear in dense, rounded clusters that create a cloud-like effect above the plant’s attractive silvery-green foliage.

Here’s what makes this plant a garden superstar:

  • Extremely drought tolerant once established
  • Compact size perfect for small spaces
  • Long blooming period that feeds pollinators
  • Attractive year-round foliage
  • Low maintenance requirements

Where Does Slender Buckwheat Shine?

This versatile native thrives in USDA hardiness zones 4-8, making it suitable for a wide range of climates. It’s particularly perfect for:

  • Rock gardens where it can nestle between stones
  • Xeriscaping and drought-tolerant landscapes
  • Native plant gardens
  • Borders and edges where you want low, spreading coverage
  • Slopes and areas with challenging growing conditions

Growing Slender Buckwheat: Less Really Is More

The secret to success with slender buckwheat is remembering that it’s a child of rocky, harsh environments. Here’s how to keep it happy:

Location and Soil

Choose a spot in full sun with excellent drainage – this cannot be emphasized enough! Sandy or rocky soils are ideal. If your soil tends to hold water, consider planting in a raised bed or adding plenty of gravel and sand to improve drainage.

Planting Tips

Spring is the best time to plant slender buckwheat. Dig a hole just as deep as the root ball but twice as wide. After planting, water gently to settle the soil, then step back and let nature take its course.

Care and Maintenance

Here’s where slender buckwheat really shines – it practically takes care of itself! Once established (usually after the first growing season), it needs very little supplemental water. In fact, overwatering is one of the few ways to kill this tough little plant. A light trim after flowering can help maintain its shape, but it’s not necessary.

The Bottom Line

Slender buckwheat is a fantastic choice for gardeners who want to support native wildlife while creating a beautiful, low-maintenance landscape. Its combination of drought tolerance, pollinator appeal, and compact size makes it perfect for modern sustainable gardening. Just remember to source your plants responsibly, and you’ll have a delightful native companion that will thrive for years to come!

Ready to add some southwestern charm to your garden? Slender buckwheat might just be the perfect plant you didn’t know you were looking for.

Slender 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 microthecum Nutt. - slender buckwheat

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