With Cephalanthus occidentalis 'Crimson Comets' (Buttonbush 'Crimson Comets'), you get an eye-catching native shrub with summer flower heads that look like little pincushions. Each round cluster is packed with tiny tubular blooms that read as creamy-white from a distance, and the flowers are rich in nectar for pollinators.
Plant it where the soil stays consistently moist to wet. This is a natural choice for pond edges, streambanks, rain gardens, swales, and other low spots that hold water. It will also handle ordinary garden soils if you keep it irrigated during dry stretches, but it performs best when it never dries out for long.
Give it full sun to part shade. More sun typically means stronger flowering, while heavier shade can reduce bloom and overall vigor. Mature size is often 6-10 feet tall, with a broad, multi-stemmed habit that can be pruned to shape or renewed by cutting back older stems.
After flowering, the rounded heads mature into persistent fruits that add texture and seasonal interest, and they are valued by wildlife. Use this shrub as a focal plant in a wetland-style bed, or as a screening and habitat plant where you want both flowers and bird activity.