Rose
Spiraea densiflora
Rosaceae · broadleaf deciduous shrub · introduced
Last updated
This profile synthesizes data from multiple published sources. Expert field review is in progress.
Rose meadowsweet, also called mountain spirea or subalpine spirea, is a deciduous shrub native to high elevations of the western mountains. Growing 2-4 feet tall, it produces narrow leaves and dense, flat-topped clusters of bright pink to rose flowers appearing in mid- to late summer.
This species is extremely cold-hardy to zones 2-6 and thrives in full sun to light shade with well-drained soil and moderate moisture. It spreads via rhizomes and self-seeding and is useful for mountain gardens and native plant landscapes. The plant attracts bees and butterflies.