Rose

Spiraea densiflora

Rosaceae · broadleaf deciduous shrub · native

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.

Plant Profile

Ornamental Interest

Origin
Pacific Northwest native
Watch for this season

Active Conidial Spread

RustHigh

Uredinial Stage (Summer)

AphidHigh

Peak Population & Dispersal

Black SpotModerate

Active Spread & Lesion Expansion

+ 4 more — see full disease and pest lists below

Diseases: Regionally Documented (11)

Pests: Regionally Documented (15)

Data Maturity
Structured Multiple sources. Expert review underway.