Anemone × 'Whirlwind' (Japanese Anemone 'Whirlwind') adds graceful, late-season bloom when many perennials are winding down. You will enjoy crisp white, semi-double flowers held above a mound of green foliage on slender stems that move with the breeze. The flowers appear in late summer into fall, bringing fresh color and a light, airy look to borders and mixed beds.
Give this perennial consistently moist, well-drained soil enriched with organic matter. Full sun to part shade works well, with afternoon shade especially helpful in warmer areas. Keep the soil from drying out during summer heat, and mulch to hold moisture and moderate soil temperatures. Plants can be slow to settle in, but become stronger with time when sited well.
Use it to brighten the back of a border, weave it through ornamental grasses, or tuck it near shrubs where it can rise through neighboring foliage. It also makes a lovely cut flower for simple arrangements. Allow room for the clump and its rhizomatous growth so it can expand without crowding more delicate neighbors.
For care, water during dry spells, remove spent stems if you want a tidier look, and cut back after frost or in early spring before new growth starts. Divide in spring if you need to control spread or share plants. In colder regions, maintain winter mulch around the crown for reliable return.