This is the only “Yarrow” I truly enjoy in the garden. Its rich green, sweetly scented, ferny foliage STAYS GREEN throughout Summer, it doesn’t go bald in the center & is NOT INVASIVE. What’s more, the attractive 3” dense golden-yellow umbels appear Spring to Fall on firmly upright stems, providing swell landing pads for butterflies. Drought tolerant, not fussy about soil, snail proof, deer resistant & an excellent cut flower fresh or dried. EASY! To 2.5’ high & wide.