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Red-flowered Buckwheat
Eriogonum grande var. rubescens
About Red-flowered Buckwheat (Eriogonum grande var. rubescens) Nurseries Show All Photos Red Buckwheat is a rare native perennial herb. It is endemic to three of the northern Channel Islands (San Miguel, Santa Rosa, Santa Cruz) but is now widely planted on the mainland. In the wild it tends to grow in dry cliffs, at elevations from 0-700 feet, although it may have been more widespread on these islands before the introduction of domestic livestock. It is a mat-forming plant producing tall, stout flower clusters of white, pink or red flowers.The naked inflorescence rises as much as 12 inches above the leaves. The flowers are held in ball-like clusters at the top, and its long bloom time in summer makes it popular with pollinators, especially butterflies. Leaves are located mainly at the base of the plant and are wavy along the edges, and up to 10 cm long; the upper side is dark green, the underside is very pale. Although it is spreading, it doesn't spread far or fast and retains a petite form. It is useful in rock gardens, spilling over a wall, or in the understory of larger plants. Despite its island origin, it performs well inland if given some afternoon shade and a little extra water. Two other recognized varieties are found on other islands but these are not available horticulturally.
Plant Description
Plant Type
Perennial herb

Max. Height
0.7 - 1.5 ft (0.21 - 0.46 m)

Max. Width
3 ft (0.9 m)



Growth Rate
Fast, Moderate


Round to elliptical, 2.5 - 7.5 cm, dark green to grey-green on the upper surface, almost white with hairs on the underside, wrinkled, edges smooth, emerging from a central base, lying relatively flat to the ground

Flower Color
Cream, Pink, White, Red

Flowering Season
Spring, Summer, Fall

Native Status
Natural Setting
Site Type
Dry, rocky cliffs and protected pockets on the northern Channel Islands where the dominant atmospheric conditions are strongly marine influenced


Elevation ?
0' - 1092'

Annual Precip. ?
11.8" - 15.5"

Summer Precip. ?
0.14" - 0.19"

Coldest Month ?
49.3° F - 54.1° F

Hottest Month ?
60.3° F - 68.8° F

Humidity ?
1.29 vpd - 12.76 vpd

Soil Description
This plant is said to be tolerant of clay and alkaline soils

Soil PH
6.0 - 8.0


Cold Tolerance(° F)
Tolerates cold to 20° F

Sunset Zones ?
5, 14, 15*, 16*, 17*, 18, 19, 20, 21*, 22*, 23*, 24*

Wildlife Attracted
Numerous birds and insects

Landscaping Information
Ease of Care
Very Easy

Water Requirement ?
Very Low
Extremely Low
Very Low
Moderate - High

Moderately Popular

Max. Summer Water ?

No Summer Water
Keep moist

Deadhead to stimulate more flowers

Propagation ?
For propagating by seed: No treatment.

Common uses
Groundcovers, Deer Resistant, Bird Gardens, Butterfly Gardens, Bee Gardens

Nursery Availability
Commonly Available

Other Names
Common Names
Redflower Buckwheat, Rosy Buckwheat

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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