HORIZON MONARCH RHODODENDRON
Rhododendron 'Horizon Monarch'
Plant in acidic, moist, well-drained soil, in partial shade.
Grows up to 6 feet tall with red buds opening to large flowers in shades of yellow with red flares. The large flowers attract birds, bees, and butterflies.
When grown in favorable conditions, pests are minimal. In wet conditions, plants will suffer from root rot.
Use as a specimen. ‘Horizon Monarch’ is a true collector’s plant.
‘Horizon Monarch’ was donated to the Arboretum in 2013 by the American Rhododendron Society.