Yarrow: Native to Sonoma County coast. Tolerates drought, heat, coast, deer, fire & poor soil. Gopher resistant. White flower heads, summer-fall. Attracts butterflies. Good for pots, borders, cut/dried flower and rock gardens. To use as a lawn, mow before it flowers. Upright, clumping: 1' x 2-3'. Full sun, low to medium water.