How much sun does Slender woolly buckwheat need?

Slender woolly buckwheat grows best in full sun conditions.

When does Slender woolly buckwheat bloom?

Slender woolly buckwheat blooms in May, June, July, and August.

Where is Slender woolly buckwheat native?

Slender woolly buckwheat (Eriogonum gracile) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.

What butterflies or moths does Slender woolly buckwheat host?

Slender woolly buckwheat is a larval host plant for acmon blue.

Slender woolly buckwheat

Name: Pollinator Patch
Author: Pollinator Patch

Eriogonum gracile

Last reviewed: September 2026

Slender woolly buckwheat (Eriogonum gracile) is a annual forb native to CA. It blooms in May, June, July, and August. The flowers draw bees and butterflies.

Toxicity unknown

Slender woolly buckwheat (Eriogonum gracile) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

low

Size

6"–20" H × 6"–12" W

Bloom

May, Jun, Jul, Aug

Native to

Pollinators

bees, butterflies

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Browse plants for this ecoregion

Coast Range Sierra Nevada Central California Foothills and Coastal Mountains Central California Valley Southern California Mountains Mojave Basin and Range Sonoran Basin and Range Southern California/Northern Baja Coast

A slender, wiry-stemmed annual buckwheat with small basal leaves and airy, branching clusters of tiny white to pink flowers.

Growing Slender woolly buckwheat

Grow Slender woolly buckwheat in full sun and low water. Mature plants reach 6 to 20 inches tall and spread 6 to 12 inches wide.

Wildlife value

Host plant for acmon blue.

Buckwheats are exceptional pollinator plants, supporting specialist native bees and serving as a larval host for the acmon blue butterfly.

Common questions

How much sun does Slender woolly buckwheat need?: Slender woolly buckwheat grows best in full sun conditions.
When does Slender woolly buckwheat bloom?: Slender woolly buckwheat blooms in May, June, July, and August.
Where is Slender woolly buckwheat native?: Slender woolly buckwheat (Eriogonum gracile) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.
What butterflies or moths does Slender woolly buckwheat host?: Slender woolly buckwheat is a larval host plant for acmon blue.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

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Ready to grow Slender woolly buckwheat? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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