Rhododendron macabeanum (McCabe Rhododendron)

Botanical Information

FamilyEricaceae
GenusRhododendron
Speciesmacabeanum
CategoryWoody
TypeShrub (evergreen)
OriginNative to Assam Manipur, India.

Details

USDA Hardiness Zone8b - 9a
USDA Hardiness Ref.
Canadian Hardiness ZoneRequires cold season protection under glass.
Canada Hardiness Ref.
RHS Hardiness ZoneH4
RHS Hardiness Ref.
Temperature (°C)-10 - (-5)
Temperature (°F)14 - 23
Height8 - 12 m
Spread8 m

Description and Growing Information

ShapeBushy.
LandscapeLow maintenance architectural cottage and informal gardens.
PropagationSemi-ripe cuttings in late summer, layering in autumn and grafting in late summer or winter.
CultivationPrefers partial-shade. Plant in moist but well-drained and 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. Lanhydrock House and Garden, Bodmin, Cornwall, United Kingdom.
Leaf DescriptionLong, oblong leaves that come to a curved point and appear on a stem in groups of 5.
Flower DescriptionLarge, bell-shaped flowers in dense rounded trusses that appear in mid spring.
Colour DescriptionThe leaves are dark green with a whitish-gray underside. The flowers are pale to deep yellow with purple blotches.

Photographs