Photo courtesy of Walters Gardens
Photo courtesy of Walters Gardens
Astilbe japonica 'Montgomery'
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Montgomery opens garnet-red plumes on dark stems, the deepest red in the astilbes and darker than most sources let on. Astilbe japonica 'Montgomery' grows 16 to 20 inches tall and 20 to 24 inches wide in part shade, hardy from Zone 3 through Zone 8.
Bloom comes in early to midsummer and holds for several weeks. The dried plumes stand into winter if you leave them up.
The foliage emerges bronze-green and matures to deep green, finely cut and fern-like, forming a dense mound that stays presentable all season.
Astilbe needs consistent moisture and will brown at the leaf edges if it dries out, which is the single most common way people lose it. Part shade with morning sun and steady water is the combination it wants, and it takes wet ground better than most shade perennials. Deer leave it alone.
Height 16"- 20" Spread 20"- 24"
USDA Hardiness Zones 3-8
Lowest Temperatures -40°F to -30°F
Part shade - 4 to 6 hours of direct sun per day, mostly before midday
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