Red Buckwheat

Red buckwheat is a mat-forming perennial native to the Channel Islands of California, where it grows on rocky coastal bluffs and exposed slopes. It produces dense clusters of deep rose-pink flowers on wiry stems above mounds of gray-green, woolly foliage from late spring through fall, giving it one of the longest bloom windows among California native perennials. Its compact form suits rock gardens, dry slopes, and the front of low-water borders.

Plant in full sun and sharply drained soil; this species is intolerant of clay or standing moisture and rots quickly where drainage is poor. No fertilizer is needed. Fall planting allows roots to establish on winter rainfall before the first dry season. Amending the planting hole with compost and applying overhead irrigation both raise crown rot risk and should be avoided. A light cutback after the main summer flush discourages excessive woodiness and often encourages a second round of growth.

Red buckwheat is among the most ecologically productive butterfly plants available for California coastal gardens. It provides nectar for native bees and bumble bees over a long season and serves as a larval host for hairstreak and blue butterflies in the family Lycaenidae, including the El Segundo blue butterfly. Dried seed heads persist into winter and supply seed for finches and other small birds.