Rhododendron x 'Red Demon'
Also known as Azalea x 'Red Demon'
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Tubular true red flowers open in early summer, later than nearly every other azalea, and the shape is built for hummingbirds. Rhododendron 'Red Demon' grows 42 to 54 inches tall and 36 to 48 inches wide in full sun to part sun, hardy from Zone 4 through Zone 7.
The late bloom fills a gap after the spring azaleas finish, and hummingbirds and butterflies come to the flowers through it.
This is a deciduous azalea, so the leaves drop in fall. Zone 4 hardiness is unusual.
Acidic soil is necessary, roughly pH 4.5 to 6.0, with good drainage and steady moisture. Alkaline ground turns the foliage yellow. Mulch the shallow roots.
Height 42"- 54" Spread 36"- 48"
USDA Hardiness Zones 4-7
Lowest Temperatures -30°F to -20°F
Full sun to part sun- at least 4 hours direct sun per day
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