Anenome Overview Category: Perennials Common Name: Anenome Botanical Name: Anenome robustissima Sun Exposure: Part to full sun Height: 22-24 in. Spread: 12-16 in. See notes | Back to perennials Notes The hardiest and most vigorous growing of the Fall-flowering Anemones. A clump-forming perennial with well-branched stems and masses of cup-shaped, China-pink flowers. Large, deeply divided, slightly bristly foliage.