A vigorous old hardy-hybrid rhododendron carrying domed trusses of rosy-crimson flowers in spring above bold leathery leaves. Needs cool moist acid soil and dappled shade to thrive.
At a glance
- Plant type: Shrub
- Mature size: 3 m H × 2.5 m W
- Aspect: part shade or morning sun
- Water: regular, moderate watering
- Frost: hardy
- Maintenance: moderate maintenance
- Origin: Exotic
About Rhododendron Cynthia
Botanically, Rhododendron 'Cynthia' is a slow-growing shrub in the Ericaceae family. It reaches around 3 m tall and 2.5 m wide at maturity, with evergreen foliage. Pink and red flowers appear in spring.
Where to grow Rhododendron Cynthia
Rhododendron Cynthia suits cool-temperate climates and grows best in part shade or morning sun. It is frost hardy and shrugs off cold winters.
Soil & planting
Rhododendron Cynthia does best in acidic and free-draining soil. Plant into well-prepared ground, firm the soil around the roots and water deeply to settle it in.
Watering & feeding
Rhododendron Cynthia is regular, moderate watering. A feed in spring with a balanced fertiliser keeps growth strong. In its first year, water deeply once or twice a week to settle the roots in, then taper off as it establishes.
Pruning & care
Prune Rhododendron Cynthia after flowering to keep it compact and encourage the next flush of blooms. Overall it is moderate maintenance.
Using Rhododendron Cynthia in the garden
Rhododendron Cynthia earns its place for a feature or specimen planting and pots and courtyard containers. It is equally at home in the ground or a large pot on a balcony or courtyard.
Companion planting & design
For a cohesive, low-care bed, pair Rhododendron Cynthia with other plants that enjoy the same regular, moderate watering and cool-temperate climate. Repeat it through a border to tie the planting together and give a sense of rhythm.
Good to know
Note that it is toxic to cats and dogs, so site it away from pets that chew. All parts can be toxic if eaten, so keep it away from small children.
Buying Rhododendron Cynthia
Plant Sale lists Rhododendron Cynthia as potted plants and advanced specimens. Stock isn't live yet — register your interest using the panel above and we'll email you the moment it lands.