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RHODODENDRON
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".
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EvergreenBroadly elliptic, dark-green leaves 3-4.5cm (1¼-1¾in) long, bristly above, scaly and yellowish green beneath.
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Height1m (3ft) -
Spread1.5m (5ft)
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Dwarf shrubTypically only grows to a maximum of one or two feet in height but there will be some exceptions.Densely branched shrub with bristly shoots. Produces trusses of up to 3 flowers 5cm (2in) across with chocolate-brown anthers.
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Half hardy - unheated greenhouse / mild winterHardy in coastal and relatively mild parts of the UK except in severe winters and a risk from sudden (early) frosts. May be hardy elsewhere with wall shelter or good micro-climate. Likely to be damaged or killed in cold winters. Plant can withstand temperatures down to -5°C (23°F)
- Details
- Mature Size
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
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Additional Features
Pests & DiseasesVine weevils, whiteflies, scale insects, caterpillars, aphids, powdery mildew, bud blast, honey fungus.
Place of originSoutheastern Tibet. -
Flower ShapeSaucer-shaped
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HardinessFrost hardy (down to -5)
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Soil ConditionsFertile moist well-drained soilHumus-richNeutral to acid soilIdeally pH4.5 - 5.5.
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Toxic - Category C
Harmful if eaten(People & Pets)
- 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
- Maintenance - fallen tree - Video Tip ondemand_video
- General Pictures
- Further Reading
- Planting out rhodies - Video Tip ondemand_video
- 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'
- R. augustinii, edgeworthii x leucaspis, 'Anne Teese', loderi 'King George' - Video Tip ondemand_video
- Rhododendron cilpinense - Video Tip ondemand_video
- Rhododendron decorum (pink form) - Video Tip ondemand_video
- Rhododendron genestrianum - Video Tip ondemand_video
- Five late flowering rhodies - Video Tip ondemand_video
- R. loderi 'King George' - Video Tip ondemand_video
- R. niveum - Video Tip ondemand_video
- Rhododendron ‘Pink Polar Bear’ - Video Tip ondemand_video
- Scented Rhododendrons - Video Tip ondemand_video
- 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
- Lithocarpus Seed Collection - Video Tip ondemand_video
- Rhododendron seed collecting - Video Tip ondemand_video
- Camellia seed collection - Video Tip ondemand_video
- Storing seeds over winter
- Embothrium Collecting and Storing Seeds
- Decaisnea Seed Collection & Potting
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1m (3ft)
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1.5m (5ft) |
Buy Varieties of RHODODENDRON
RHODODENDRON SPECIES
RHODODENDRON arboreum
flower colour ranging from white through pink and red, often with spotting in the throat.
RHODODENDRON augustinii
striking blue flowers. A must for any woodland garden
Gift-wrapping available
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
Gift-wrapping available
RHODODENDRON burmanicum
Semi-dwarf rhododendron. Greenish-yellow flowers
Gift-wrapping available
RHODODENDRON calostrotum 'Gigha'
dwarf evergreen with dense, brown scales beneath leaves. Rose-purple flowers
RHODODENDRON calostrotum subsp. riparium Nitens
dwarf shrub with funnel shaped purple flowers
Gift-wrapping available
RHODODENDRON crassum
late scented white
RHODODENDRON edgeworthii
white flowers tinged pink with a rich scent. Bullate leaves with fawn indumentum
Gift-wrapping available
RHODODENDRON falconeri
large leafed species with creamy-yellow flowers late in the season
RHODODENDRON formosum
Semi-dwarf rhododendron. (Syn. Gibsonii) - white striped pink,lightly scented
Gift-wrapping available
RHODODENDRON fortunei subsp. discolor
late flowering with large trusses of fragrant white or pinkish flowers
RHODODENDRON hippophaeoides
grey-green leaves and lavender or rose coloured flowers
Gift-wrapping available
RHODODENDRON johnstoneanum
creamy-white scented
Gift-wrapping available
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 lutescens
free-flowering canary-yellow with bronze foliage, hardy and vigorous
Gift-wrapping available
RHODODENDRON macabeanum
leaves up to a foot long and huge trusses of bell-shaped pale yellow flowers with purple blotches
RHODODENDRON oldhamii
hairy young shoots on this azalea-like species and brick red flowers
RHODODENDRON sinogrande
the largest leafed rhododendron of all with huge trusses of yellow fading to creamy-white flower with a crimson blush
RHODODENDRON HYBRIDS
RHODODENDRON 'Aladdin'
large pale salmon-pink flowers with darker throat. Late flowering.
Gift-wrapping available
RHODODENDRON 'Angelo'
huge trusses of trumpet-shaped white flowers, highly scented
Gift-wrapping available
Gift-wrapping available
RHODODENDRON 'Anna Rose Whitney'
very large bright deep pink
Gift-wrapping available
RHODODENDRON 'Apricot Nectar'
apricot flowers with ruffled edges.
RHODODENDRON 'Azurro'
purple flowers each with a dark red blotch
Gift-wrapping available
RHODODENDRON 'Bert's Own'
highly scented creamy-white flowers
RHODODENDRON 'Black Magic'
rich crimson-red flowers in large trusses
Gift-wrapping available
RHODODENDRON 'Blue Diamond'
Semi-dwarf rhododendron. Deep blue
RHODODENDRON 'Blue Peter'
violet flowers paling to white at the throat with maroon spots
Gift-wrapping available
Gift-wrapping available
RHODODENDRON 'Blue Tit'
Dwarf rhododendron. Clear blue
RHODODENDRON 'Bo peep' (pink form)
very early cerise pink
Gift-wrapping available
RHODODENDRON 'Christmas Cheer'
pink in bud fading to white.
Gift-wrapping available
Useful extras...
