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RHODODENDRON
Commonly known as Rose bay
Scented Rhododendrons suitable for conservatory or cool greenhouse are marked with an asterisk.
Syn. Azalea.
Genus of more than 1000 species of evergreen and deciduous trees and shrubs from Europe, Asia, Australasia and North America, particularly southwestern China, Tibet, Burma, northern India and New Guinea.
Evergreen rhododendrons vary greatly in size and usually have bell-shaped flowers with 10 stamens.
Azaleas have smaller, thinner leaves and are generally medium-sized shrubs with smaller, funnel-shaped flowers with, usually, 5 stamens.
The problem rhododendron, vigorous hybrids of R. ponticum, which is colonizing large areas has been given the name R x superponticum and is subject to EU legislation under the "Invasive Alien Species Regulation".
Further Reading....
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Deciduous
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Evergreen
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Full sun -
Partial shade - most large-leaved species and hybrids require dappled shade. -
Additional Features - Good to know - - syn. Azalea. Shallow planting essential. Deadhead carefully where practical to promote vegetative growth. -
Pests & Diseases - vine weevils, scale insects, powdery mildew, bud blast, honey fungus -
Place of origin - Europe, Asia, Australasia, North America -
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Garden Location/Conditions - Greenhouse / conservatory - Not the sort of plants to be grown outside where there are likely to be frosts. These plants need to be grown in a conservatory or cool greenhouse or at least brought inside for the winter
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Soil Conditions - Fertile moist well-drained soil - - humus-rich
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Neutral to acid soil - ideally pH 4.5 - 5.5
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Wildlife - Rabbit Resistant -
Cold weather damage to evergreen plants
Rhododendron - Care Guide
- Dead Heading
- Dead Heading - Video Tip ondemand_video
- Pruning
- Pruning - Video Tip ondemand_video
- Weed Killing
- Pests and Diseases
- Honey Fungus - Video Tip ondemand_video
- Further Reading
- Rhododendron genestrianum - Video Tip ondemand_video
- Scented Rhododendrons - Video Tip ondemand_video
- Planting out rhodies - Video Tip ondemand_video
- Five late flowering rhodies - Video Tip ondemand_video
- Rhododendron decorum (pink form) - Video Tip ondemand_video
- Rhododendron ‘Pink Polar Bear’ - Video Tip ondemand_video
Rhododendron - Propagation
- Growing from seed
- Rhododendron Seed Collecting - Video Tip ondemand_video
- Potting on Rhododendron seedlings - Video Tip ondemand_video
- Propagation by taking semi-ripe cuttings - Video Tip ondemand_video
- Growing from cuttings
- Propagation by layering - Video Tip ondemand_video
- Propagation by other means
- Making a hybrid - Video Tip ondemand_video
- Making a hairy or scaly cross - Video Tip ondemand_video
- Caerhays bred 'Red Centurian'
Shrubs and Trees - Seeds - 1) Collecting Seeds
- When is the right time to collect seeds?
- When are seeds actually ripe and ready for collection?
- Magnolia seed collection - Video Tip ondemand_video
- Cornus capitata seed collection - Video Tip ondemand_video
- Rhododendron seed collecting - Video Tip ondemand_video
Shrubs and Trees - Seeds - 2) Storing Seeds
Shrubs and Trees - Seeds - 3) Planting Seeds
Buy Varieties of RHODODENDRON
RHODODENDRON bureavii >
Very attractive rich red furry indumentum on the undersides of the leaves is the key feature of this unusual and rare species. Flowers rose
RHODODENDRON calostrotum 'Gigha' >
Dwarf evergreen with dense, brown scales beneath leaves. Rose-purple flowers
RHODODENDRON decorum >
Commonly known as: Great white rhododendron.
Strongly fragrant white or pink tinged flowers
RHODODENDRON edgeworthii >
White flowers tinged pink with a rich scent. Bullate leaves with fawn indumentum
RHODODENDRON formosum >
Semi-dwarf rhododendron. (Syn. Gibsonii) - white striped pink,lightly scented
RHODODENDRON fortunei subsp. discolor >
Late flowering with large trusses of fragrant white or pinkish flowers
RHODODENDRON lindleyi >
A straggly upright habit but one of the most beautiful and scented rhododendrons when in flower. Pure white in trusses of 3 or 5 flowers
RHODODENDRON macabeanum >
Leaves up to a foot long and huge trusses of bell-shaped pale yellow flowers with purple blotches
RHODODENDRON oldhamii >
Commonly known as: Formosan azalea.
Hairy young shoots on this azalea-like species and brick red flowers in MAY
