Rhododendron 'Firestorm'
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Cardinal red flowers with wavy edges cover this low spreading shrub in late spring. Rhododendron 'Firestorm' grows 3 to 4 feet tall and wide in part shade, hardy from Zone 5 through Zone 8.
The wavy petal edges give the flowers more texture than a smooth-petaled rhododendron, and the compact size suits a foundation bed.
The large-leaf rhododendrons hold their foliage year-round rather than thinning like the small-leaved types. Below about 25 degrees the leaves droop and curl up, curling tighter the colder it gets, and they open again within hours once temperatures rise. It looks alarming the first winter and it is entirely normal, a water-conserving response rather than a sign of trouble.
Acidic soil is necessary, roughly pH 4.5 to 6.0, with good drainage and steady moisture. Mulch the shallow roots.
Height 3'- 4' Spread 3'- 4'
USDA Hardiness Zones 5-8
Lowest Temperatures -20°F to -10°F
Part shade - 4 to 6 hours of direct sun per day, mostly before midday
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