Salmon-pink buds open to soft creamy yellow flowers, a pastel shift that plays out across the cluster as the flowers age. Rhododendron yakushimanum Golden Torch grows 2 to 3 feet tall and 3 to 4 feet wide in part shade, hardy from Zone 5 through Zone 9.
Zone 5 through Zone 9 is a wider range than most of the group carries, taking both harder winters and hotter summers.
The yakushimanum hybrids come from a species native to a single Japanese island, and they inherit its best traits: dense compact habit, thick leaves with a felted tan coating underneath, and heavy bud set on young plants. They hold their foliage better through winter than most large-leaf rhododendrons, though the leaves still roll in hard cold, which reverses as soon as it warms.
The habit is compact and semi-dwarf, holding a tidy mound. Acidic soil is necessary, roughly pH 4.5 to 6.0, with good drainage and steady moisture. Mulch the shallow roots.