Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Eriogonum cinereum is a species of wild buckwheat known by the common names coastal buckwheat and ashyleaf buckwheat. This shrub is endemic to the coastline of California, where it grows on beaches and bluffs and in coastal scrub and chaparral. This plant may reach up over a meter in height and width and is light silvery gray in color due to the woolly hairs on its stems and foliage. The leaves are wavy-edged ovals one to three centimeters long. The flower clusters stick out from the plant, each with one to several heads of tiny tightly-packed frilly flowers which are usually light brownish-pink in color and quite hairy. This is the foodplant for Euphilotes bernardino, the Bernardino dotted blue butterfly.

Plant type

Shrub

Size

2 - 4 ft Tall
3 - 5 ft Wide

Form

Rounded

Growth rate

Fast

Dormancy

Evergreen

Calscape icon
Color

Brown, Yellow

Flowering season

Winter, Spring, Summer, Fall

Sun

Full Sun

Water

Low, Very Low

Summer irrigation

Max 1x / month once established

Ease of care

Moderate

Cold tolerance

Tolerates cold to 15 - 25° F

Soil drainage

Fast, Medium, Slow

Soil description

Adaptable.
Soil PH: 6 - 8

Maintenance

Remove dead seed heads in late fall and dead branches during the growing season. Older untidy plants can be pruned back to 8 inches in the fall to reestablish shape.

Propagation

For propagating by seed: No treatment.

Sunset Zones

5, 14*, 15*, 16*, 17*, 19, 20, 21, 22*, 23*, 24*

Site type

Beaches, bluffs

Plant communities

Coastal Sage Scrub, Coastal Strand

Plant alongside other natives of the California coastal scrub region, such as California Larkspur (Delphinium californicum), Common Tidy Tips (Layia platyglossa), Maritime Brome (Bromus maritimus), and Monterey Indian Paintbrush (Castilleja latifolia).

Bats
Birds
Bees
Caterpillars
Butterflies

Butterflies and moths supported

3 confirmed and 41 likely

Confirmed Likely

Mormon Metalmark

Apodemia mormo

Square-spotted Blue

Euphilotes battoides

Bernardino Blue

Euphilotes bernardino

Sonoran Metalmark

Apodemia mejicanus