Plant library · Perennial Flowers
Filipendula rubra
Queen of the Prairie is a tall perennial for the back of a sunny planting, where its cotton-candy pink plumes can rise above lower plants in early to mid summer. At about 5 feet tall and 3½ feet wide, it gives moist ground a strong vertical presence without needing to occupy the edge of a bed. Use it where a substantial, long-lived clump can remain in place year after year.
Set Queen of the Prairie into rain gardens, damp border sections, and naturalized planting areas rather than narrow foundation strips or small islands. Place it behind shorter perennials and keep its height clear of sightlines at path junctions, gates, and seating areas. A grouped planting makes the summer display read as one broad feature, while a path or mowing edge alongside the bed keeps the tall growth reachable for seasonal cleanup.
Plant on 3-foot centers for a connected drift. Each established plant can occupy roughly 3½ feet of width, so this spacing allows neighboring clumps to knit together instead of leaving isolated gaps. For a single specimen, reserve a footprint at least 3½ feet across and avoid pinching it between a path and a wall. Leave a workable access edge along the planting rather than stepping through the foliage.
Give this perennial full sun and reliably moist ground. It belongs in the wettest dependable part of a rain garden or border, not on a raised berm or other spot that dries quickly after rain. Keep moisture conditions consistent across the entire clump, especially where nearby paving, tree roots, or roof overhangs can create a dry pocket.
The pink plumes arrive from early through mid summer, making this a useful middle-season anchor behind earlier bloomers and in front of later-rising tall perennials. Its perennial framework remains part of the bed plan beyond the bloom window, so leave its allotted space open when refreshing or dividing nearby plantings. The tall stems make the display most effective when viewed across a bed rather than from directly overhead.
Allow extra room beyond the initial planting pattern in favorable moist ground. Filipendula rubra spreads by rhizomes and can form sizable colonies, so use a defined bed edge where its expansion needs to stay contained. Do not rely on dry spells as a way to hold it in check: drought can damage the foliage, while partial shade can make stems more prone to flopping.[1]
Editorial content updated 2026-07-20.