Astilbe chinensis 'You And Me Forever®' (Chinese Astilbe 'You And Me Forever') is a compact, clump-forming perennial grown for its feathery summer bloom and refined, fernlike foliage. You will get the best performance when you site it where it receives morning sun or bright filtered light and protection from hot afternoon sun. In part shade to shade, the foliage stays lush and the flower plumes hold their color longer.
Plan on a mature size of roughly 18-24 inches tall, with a neat footprint that fits easily into borders, woodland edges, and shade beds. The blooms rise above the foliage in showy, plume-like clusters and create a soft, textured look that pairs well with bolder leaves. The plant also makes a nice repeating element when planted in small drifts.
Moisture is the key to keeping astilbe looking its best. Keep the soil consistently moist, especially during the first season and in summer heat. Work in compost to improve water-holding capacity, and add a light mulch to help moderate soil temperature. If your site runs dry, water deeply rather than frequently so the root zone stays evenly hydrated.
For easy companions, mix with hostas, ferns, heucheras, brunnera, and other shade perennials that enjoy similar moisture. Remove spent flower stems if you prefer a tidier look, or leave them for texture. Divide clumps every few years if needed to refresh vigor and keep the planting looking full.