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Rosaceae
Spiraea x billiardii
Spirea
An upright deciduous shrub resulting from the cross between Spiraea douglasii from western North America and S. salicifolia from Eurasia, this vigorously suckering shrub makes a good tall ground cover for areas of the garden that can accommodate its rapidly expanding rhizomes and its brown spent flower heads. The spires of rose-pink flowers appear throughout summer atop hairy, red-brown, shoulder-high stems. The lance-shaped medium-sized leaves have gray fuzzy undersides.
Easily grown in well-drained acidic to neutral soil in sun or light shade, this tough and sometimes invasive shrub is best reserved for rougher areas of the garden. Deadhead spent flowers for neater plants and prolonged bloom. Prune back plants to a hand's-breadth and remove weak and dead stems in early spring to promote strong healthy new growth and larger more abundant flower heads.
8 - 1
5 - 8
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Shrub
Full Sun, Partial Sun
5'-6' / 1.5m - 1.8m
5'-10' / 1.5m - 3.0m
Early Summer, Summer, Late Summer
Hybrid Origin
Acidic, Neutral
Well Drained
Loam, Sand
Fast
Average Water
Upright/Erect
Summer
Showy
No
Yes
Cutflower, Groundcover, Wildflower
Sometimes
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