En EspaŅol
Eriogonum umbellatum (Sulphur-flower buckwheat) | NPIN
Share

NPIN: Native Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

Search native plant database:
Name:    
Family:    
See a list of all Plants





Eriogonum umbellatum (Sulphur-flower buckwheat)
Bransford, W.D. and Dolphia

Eriogonum umbellatum

Eriogonum umbellatum Torr.

Sulphur-flower buckwheat, Sulphur-flower wild buckwheat, Sulphur buckwheat, Sulphur flower

Polygonaceae (Buckwheat Family)

Synonym(s):

USDA Symbol: erum

USDA Native Status: L48 (N), CAN (N)

This is an exceedingly variable species with many different varieties & subspecies. Plant height varies from 3 in. to 3 ft., but all plants make loose mats of leaves, often green above and gray-woolly beneath. Leaves at base, and on long, erect stalks bloom tiny, yellow or cream flowers in balls at ends of branches of an umbel-like cluster. Flower clusters occur on 6-9 in. stems. The cream to sulfur-yellow, tubular flowers fade to orange or red.

Sulphur Buckwheat is highly variable, and this adds to the difficulties of identification in a complex group of similar western species.

 

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf: Gray-Green
Flower:
Fruit:
Size Class: 1-3 ft.

Bloom Information

Bloom Color: White , Yellow
Bloom Time: Jun , Jul , Aug , Sep

Distribution

USA: AZ , CA , CO , ID , MT , NM , NV , OR , UT , WA , WY
Canada: AB , SK
Native Distribution: Rocky Mts. (typical form) & other cold, western mt. sites
Native Habitat: Dry, mt. slopes & ridges

Growing Conditions

Water Use: Low
Light Requirement: Sun , Part Shade
Soil Moisture: Dry
Soil pH: Circumneutral (pH 6.8-7.2)
CaCO3 Tolerance: High
Soil Description: Gravelly soils.
Conditions Comments: Because the species is so variable, it is especially important to choose material from a habitat that matches your site.

Benefit

Conspicuous Flowers: yes
Attracts: Butterflies

Value to Beneficial Insects

Special Value to Native Bees
Supports Conservation Biological Control

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

Butterflies and Moths of North America (BAMONA)

Eriogonum umbellatum is a larval host and/or nectar source for:
Lupine Blue
(Plebejus lupini)

Larval Host
Learn more at BAMONA

Propagation

Description: Propagate only by seed as it is nearly impossible to transplant or divide the long taproots of mature plants. Plant seed thickly as germination is low.
Seed Collection: The three-sided achene can be hand-stripped from the plant.
Seed Treatment: No treatment is necessary, but a 3-month stratification may improve germination.
Commercially Avail: yes

Find Seed or Plants

Find seed sources for this species at the Native Seed Network.

View propagation protocol from Native Plants Network.

From the National Suppliers Directory

According to the inventory provided by Associate Suppliers, this plant is available at the following locations:

Oregon Native Plant Nursery - Woodburn, OR

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Santa Barbara Botanic Garden - Santa Barbara, CA
Native Seed Network - Corvallis, OR

Bibliography

Bibref 1186 - Field Guide to Moths of Eastern North America (2005) Covell, C.V., Jr.
Bibref 1185 - Field Guide to Western Butterflies (Peterson Field Guides) (1999) Opler, P.A. and A.B. Wright
Bibref 995 - Native Landscaping from El Paso to L.A. (2000) Wasowski, S. and A. Wasowski

Search More Titles in Bibliography

Recommended Species Lists

Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.

View Recommended Species page

Additional resources

USDA: Find Eriogonum umbellatum in USDA Plants
FNA: Find Eriogonum umbellatum in the Flora of North America (if available)
Google: Search Google for Eriogonum umbellatum

Metadata

Record Modified: 2013-05-29
Research By: TWC Staff

Go back

E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center