Western Yarrow is a small perennial that spreads by rhizomes. It varies by locale from 1-4'. The cream-colored (off-white?) flowers are in 3- 4"clusters. It's native to the western U.S. and is drought tolerant, swamp tolerant., somewhat alkali tolerant. Yarrow is native on the nursery property growing in the shade of Quercus douglasii, with Lonicera interrupta and Stipa lepida (Nassella lepida) in sandy loam to clay, north slope to south slope. Give full sun near coast, part shade inland.
In the Big Sur area this Yarrow can be found right on the coastal bluff.
(Achillea borealis ssp. californica (Munz))
