Rhododendron 'Ramapo' (Ramapo Rhododendron)


Michael's Opinion

Rhododendron 'Ramapo' is a dense, dwarf evergreen with outstanding blue-green colour. The leaves contrast well with the purple-blue flowers.

Botanical Information

FamilyEricaceae
GenusRhododendron
Cultivar'Ramapo'
CategoryWoody
TypeShrub (evergreen)
OriginIntroduced by Guy Nearing, New Jersey in 1982.
Pronunciation

Details

USDA Hardiness Zone6b - 7a
USDA Hardiness Ref.
Canadian Hardiness Zone6
Canada Hardiness Ref.
RHS Hardiness ZoneH6
RHS Hardiness Ref.
Temperature (°C)-32
Temperature (°F)-25
Height1 m
Spread1.5 m
GrowthMedium
Flowering PeriodApril

Description and Growing Information

General DescriptionRhododendron 'Ramapo' is a dense-growing evergreen shrub that has clusters of purple-blue flowers which are an excellent contrast to the blue-green foliage. Ramapo is very effective when a smaller accent plant is needed.
ID Characteristic'Ramapo' is a dwarf, compact and hardy variety with bright purple-blue flowers, which are about 2.5 cm long. The foliage is a dense blue green colour and about 5 - 7 cm in length. 'Ramapo' attracts butterflies and is deer resistant.
ShapeMounding, round, compact.
LandscapeBorder, container, hedge, rock garden, woodland garden, mass planting, grouping, specimen plant.
PropagationBy layering, grafting, and tissue culture.
CultivationRhododendron 'Ramapo' prefers high organic, well-drained, acidic soils. Plant in full sun to partial shade. Make sure to mulch well to conserve moisture.
PestsChlorosis, leaf spot, borer damage, salt burn, die back, root rot, spider mites, lacebugs, black vine weevil.
HabitatHorticultural origin.
Bark/Stem DescriptionThe young shoots of 'Ramapo' have a nice red-cinnamon colour providing year round interest. Old bark is grey in colour.
Flower/Leaf Bud DescriptionThe leaf buds on 'Ramapo' are right at the base of the flower clusters. Once the main bud opens up into a cluster of lavender buds, then each one of those buds opens again into its own flower. Rhododendrons set their buds on old wood.
Leaf DescriptionThe leaves are 5 -7 cm in length and are dark green in colour. The leaves are naturally circular and when bruised, give off a pine aroma. The foliage turns from a frosty blue, to blue-green, and finally to bronze-green with the seasons.
Flower DescriptionThe flower on Rhododendron 'Ramapo' is about 2.5 cm long, purple-blue in colour, and are held in clusters on the plant in the Spring. Ramapo flowers from April - May.
Fruit DescriptionRhododendron fruit is a red-brown, elongated capsule that is about 1.5 cm long. Inside the capsule there are many tiny seeds that are in a long-stemmed cluster. Fruit matures in the autumn.
Colour Description'Ramapo' has changing foliage colour from blue, to green, to bronze with the seasons. The flowers on 'Ramapo' are an astounding blue-purple colour in the spring. The new bark is a red-cinnamon colour, and the old bark is grey in colour.
Texture DescriptionSmooth leaves with delicate purple spring flowers.

Photographs