Rose
Spiraea densiflora
Rosaceae · broadleaf deciduous shrub · introduced
Last updated
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.
Primary Infection
Spring New Growth - Early Infection Window
Aecial Stage (Alternate Host)
Spring Emergence / Primary Infection
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