Rocky Knoll Farm
Royal Purple
$30
Hardy to -10°F when protected from windchill, the rich purple flowers with a pale yellow eye truly make this medium-sized grower stand out. The colorful trusses that sit atop dark-green foliage and truly pop in any garden. Give it full sun to partial shade and watch for blooms around May. This hybrid rhododendron grows to around 4' tall at maturity.