Rocky Knoll Farm
Colonel Coen
$29
Colonel Coen boasts deep purple flowers accented with a reddish-magenta throat and black patterned dorsal. This splendid combination truly makes the trusses of this hybrid rhododendron stand out for admiration. Hardy to -10°F when protected against windchill, this plant can grow to 5' tall over time and often blooms around May (midseason).