Rhododendron 'Cynthia' (Cynthia Rhododendron)


Botanical Information

FamilyEricaceae
GenusRhododendron
Cultivar'Cynthia'
CategoryWoody
TypeShrub (evergreen)

Details

USDA Hardiness Zone5 - 8
USDA Hardiness Ref.
Canadian Hardiness Zone6
Canada Hardiness Ref.
RHS Hardiness ZoneH5 - H7
RHS Hardiness Ref.
Temperature (°C)-15 - (-20)
Temperature (°F)5 - (-4)
Height4 - 8 m
Spread2 - 5 m
GrowthMedium
Flowering PeriodMay

Description and Growing Information

ShapeBushy and dome-shaped.
LandscapeHedges, screens, architectural cottage and informal gardens.
PropagationGrafting.
CultivationPrefers full sun and partial-shade. Plant in moist but well-drained, leafy, humus-rich, slightly acidic soil.
PestsVine weevil, rhododendron leafhopper, pieris lacebug, scale insects, caterpillars and aphids may be a problem. Powdery mildews, rhododendron petal blight, rhododendron bud blast, silver leaf and honey fungus may occur.
Notable SpecimensWestonbirt, The National Arboretum, Tetbury, Gloucestershire, England.
HabitatHorticultural origin.
Leaf DescriptionLarge oblong leaves.
Flower DescriptionConical trusses of funnel-shaped flowers that are 8 cm wide and bloom in late spring.
Colour DescriptionThe leaves are green. The flowers are deep pink.

Photographs