Large glistening pink flowers with bronze-yellow markings open in spring, and they carry a fragrance most large-leaf rhododendrons lack. Rhododendron 'Scintillation' grows 5 to 6 feet tall and 6 to 7 feet wide in part shade to full shade, hardy from Zone 5 through Zone 8.
The foliage is lustrous dark green and unusually glossy, holding its look through winter.
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.
It takes deeper shade than most rhododendrons. Acidic soil is necessary, roughly pH 4.5 to 6.0, with good drainage and steady moisture. Mulch the shallow roots.