Long narrow dark green leaves. These are found mainly in Asia, although it is also widespread throughout the highlands of the Appalachian Mountains of North America. Ideal position: most garden situations that are light and breezy. Grows to become a very large tree. Fluorescent pink flowers in flat trusses. Rhododendron / ˌ r oʊ d ə ˈ d ɛ n d r ə n / (from Ancient Greek ῥόδον rhódon "rose" and δένδρον déndron "tree") is a genus of 1,024 species of woody plants in the heath family (Ericaceae), either evergreen or deciduous, and found mainly in Asia, although it is also widespread throughout lowland and montane forests in the Pacific Northwest, California, the Northeastern United States, and especially in the … Suitable for light woodland site or milder climate and in some shade. RHS Accepted name. Accessed: 2020 May 15. Requires neutral or acid soil.Flower Colour : Creamy-white, yellow centres,red spottingFlowering Time : early May Scented :   No Ultimate Height :  1.50 metres / 4 feet 11 inchesParentage : Hardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. Rare species, often growing into a small tree. Lax habitFlower Colour : Crimson-scarletFlowering Time : May Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Griffithianum hybrid x Maxwell T MastersHardiness : Group : Large Hybrids over 2m.. Upright shrub. Our Botanical team are working hard to increase the number of plants with detailed information. ‘Irene Koster’ received the Royal Horticultural Society's … Best in a tub, so it can be protected under glass in the winter.Flower Colour : White, scentedFlowering Time : March-April Scented :   Yes Ultimate Height :  1.50 metres / 4 feet 11 inchesParentage : Lady Alice Fitzwilliiam x edgeworthiiHardiness : -12 to -15°C (10°F to 5°F) Hardy in a sheltered site in most UK, Damaged in severest winters.Group : Compact .. A medium sized compact plant. Superb deep Yellow flowers . Relationships: Azaleas are divided into two subgenera (deciduous and evergreen) in the very large genus of rhododendron (see Pacific Rhododendron). (Not Reg. Albatross is of the same cross.Flower Colour : Deep rose-pinkFlowering Time : Late May Scented :   Yes Ultimate Height :  2.00 metres / 6 feet 6 inchesParentage : Loderi King George x fortunei ssp discolorHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. Large plant, improved by pruning. suppliers. Best in a woodland site.Flower Colour : Blood red speckled blackFlowering Time : early April-May Scented :   No Ultimate Height :  3.00 metres / 9 feet 10 inchesParentage : thomsonii ssp thomsonii x unknown hybridHardiness : Group : Large Hybrids over 2m.. Description. Leaves held for one yearFlower Colour : Flowering Time :  Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Hardiness : Group : Large Hybrids over 2m.. Conical trusses of deep pink flowers fading to pale rose. Compact and easy to grow, very hardy.Flower Colour : Reddish-purple with deeper blotchFlowering Time : May-June Scented :   No Ultimate Height :  1.50 metres / 4 feet 11 inchesParentage : Ponticum x Purple SplendourHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Compact & Medium Hybrids up to 2m.. Flowers similar to "Britannia", large 10-14 flower rounded trusses of crimson-scarlet. Ericaceae, Name Status A good plant to complement the 'Blues' and dwarf yellows.Flower Colour : Rich purpleFlowering Time : April-May Scented :   No Ultimate Height :  1.00 metres / 3 feet 3 inchesParentage : russatum x Blue DiamondHardiness : Group : Compact & Medium Hybrids up to 2m.. Rose opal to jasper red flowers in trusses of 15. This species is a parent of many hybrid deciduous azaleas. Cinn var album x calophytumHardiness : Group : Compact & Medium Hybrids up to 2m.. Heat tolerant.Flower Colour : Medium-pink, deeper in throatFlowering Time : June Scented :   No Ultimate Height :  10.00 metres / 32 feet 9 inchesParentage : griersonianum x auriculatumHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. Forms large spreading shrub. Try an advanced search, RHS Registered Charity no. ‘Irene Koster’along with several other named selectons were introduced by Koster & Sons of Holland around 1895, these plants are thought to be hybrids of R. occidentale and Mollis azalea hybrids (called Occidentale Hybrids). Find help & information on Rhododendron occidentale hybrid from the RHS The Pacific or Westen Azalea, Rhododendron occidentale, is a wild azalea native mainly to southern Oregon & northwestern California, west of the Cascades & the Sierras. Habit: upright. Source - Brian Wright, CrowboroughFlower Colour : Flowering Time :  Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : aberconwayi x williamsianumHardiness : Group : Compact & Medium Hybrids up to 2m.. Flowers white, flushed with irregular pink staining, tinged pink on the outsideFlower Colour : White, flushed pinkFlowering Time : May-June Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : griersonianum x thayerianumHardiness : -15°C (5°F) Hardy in a sheltered site in most UK, Damaged in severest winters. Unusual ruby red flowers, needs protecting from late frosts and sometimes prone to powdery mildrewFlower Colour : Ruby redFlowering Time : July Scented :   No Ultimate Height :  1.50 metres / 4 feet 11 inchesParentage : sanguineum ssp. Bears delicate pink flowers. Rhododendron-Hybriden Rhododendron, Rhododendron Rhododendron hybrids Rhododendron Azalea Geisha Red plant in flower in mid spring. Extremely valuable as it is scented and flowers very late in the season.Flower Colour : Rich PinkFlowering Time : August Scented :   Yes Ultimate Height :  4.00 metres / 13 feet 1 inchesParentage : auriculatum xHardiness : Group : Large Hybrids over 2m.. Soft Pink Sweetly Scented. Tall tree-like open habit, requires a sheltered and shaded site.Flower Colour : Blush pink-whiteFlowering Time : late May Scented :   Yes Ultimate Height :  3.00 metres / 9 feet 10 inchesParentage : fortunei ssp discolor x griffithianumHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. Compact rounded shrub, with very dark green crinkly leaves. 20-122 h.p. Best colour of all the early reds.Flower Colour : CrimsonFlowering Time : March-April Scented :   No Ultimate Height :  2.00 metres / 6 feet 6 inchesParentage : barbatum x hookeriHardiness : -15°C (5°F) Hardy in a sheltered site in most UK, Damaged in severest winters. Much like auriculatum, flowers medium pink, deeper in throat, trumpet shaped. the RHS today and get 12 months for the price of 9, Family Long narrow dark green leaves. Azaleas are elepidote. Published on the internet. ... Today and Tomorrow are hybrids of R. smirnowii X R. yakushimanum done by Gustav Mehlquist. Winter freeze kills flower buds.Flower Colour : White, purple striped.Flowering Time : April-May Scented :   Yes Ultimate Height :  1.50 metres / 4 feet 11 inchesParentage : ciliicalyx x formosumHardiness : -12°C (10°F) Hardy outdoors in milder parts of UK (such as Cornwall, Argyll), southern Ireland.Group : Compact & Medium Hybrids up to 2m.. Deep red flowers. This Handbook is periodically revised. Dec 9, 2016 - Explore Tim B's board "Rhododendron hybrids" on Pinterest. ?Calfort.Flower Colour : WhiteFlowering Time : March Scented :   Yes Ultimate Height :  3.00 metres / 9 feet 10 inchesParentage : calophytum x praevernumHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. Powered By OpenCart Rhododendron.com © 2020, Rhododendron 'aberconwayi x williamsianum', Rhododendron 'Albatross var. Long bright green leaves. Huge trusses of Pink flowers with a small rosy blotch at the base, . Flower Colour : Flowering Time : April Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Hardiness : Group : Large Hybrids over 2m.. Low growing spreading variety. Dark leaves with copper new growth.Flower Colour : Pale, rosy pinkFlowering Time : April-May Scented :   No Ultimate Height :  0.60 metres / 1 feet 11 inchesParentage : williamsianum x Wilgen's RubyHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. USDA, ARS, Germplasm Resources Information Network. Flower Colour : Flowering Time :  Scented :   Yes Ultimate Height :  2.00 metres / 6 feet 6 inchesParentage : veitchianum Cubittii GroupHardiness : -10°C to -8°C (15°F to 20°F) Greenhouse culture, except the mildest western areas of the UK.Group : Compact & Medium Hybrids up to 2m.. Often early into flowe.. Upright hybrid. Pink buds open to white with blotch of oxblood red at the base of the flower, Dark green leaves narrowly oblong, paler beneath,Flower Colour : White, blotch oxblood redFlowering Time : May Scented :   No Ultimate Height :  2.00 metres / 6 feet 6 inchesParentage : souliei x Coronation DayHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Compact & Medium Hybrids up to 2m.. Henry Street, Two Little Girls, Abigail and Andra). Forming a neat rounded shrub. wide (7 cm), is elegantly frilled and flushed red orange with a gold tinge. Highly scented white flowers, heavily flushed pink on the outside. Not to be confused with Abegail.Flower Colour : Large pink, orange tonesFlowering Time : May Scented :   No Ultimate Height :  2.00 metres / 6 feet 6 inchesParentage : Goldsworth Orange x Mrs P.D.WilliamsHardiness : -15°C (5°F) Hardy in a sheltered site in most UK, Damaged in severest winters. This large, spreading and deciduous shrub is native to the western USA (California to S Washington) and the parent of many cultivars and hybrids, including many of the famous Knap Hill Azaleas. Many can be seen in the "Australian Hybrids" section of the Rhododendron Garden at Olinda. Flower Colour : Flowering Time :  Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Hardiness : Group : large Hybrids over 2m.. Forms a gnarled shrub, dark green leaves, puckered above,tawny indumentum below. A strong grower with lovely fragrance. Akbar is of the same cross.Flower Colour : White, scentedFlowering Time : late May Scented :   Yes Ultimate Height :  6.00 metres / 19 feet 8 inchesParentage : Loderi x fortunei ssp discolorHardiness : -15 to -18°C (5°F to 0°F) Hardy in all but the coldest parts of UK but need some protection... A tall, upright shrub. Huge trusses of pure white flowers with a small rosy blotch at the base, Fragrant. The Royal Horticultural Society is the UK’s leading gardening charity. Highly recommended.Flower Colour : White, large, scentedFlowering Time : June-July Scented :   Yes Ultimate Height :  3.00 metres / 9 feet 10 inchesParentage : Poler Bear x ?Hardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. A tall and stalwart shrub of good quality, carrying trusses of 12 florets in deep rose-pink with some crimson streaks in the throat, sweetly scented. Best with winter protection. Probably the pinkest of the occidentale hybrids.Flower Colour : pinkFlowering Time : May Scented : Yes Ultimate Height : 2.50 metres / 8 feet 2 inchesParentage : Hardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Azaleas - Deciduous (Occidentale).. Pink, cream and white flowers. The Western Azalea, Rhododendron occidentale Frank Mossman, M. D., Vancouver, Washington Britt Smith of Kent, Washington and I have been researching Rhododendron occidentale for eight years. Slightly fragrant, they blanket this midseason Knaphill hybrid in an exc… Easy to grow. – The Rhododendron Handbook; Part I, Rhododendron Species, 1967; Part II, Rhododendron Hybrids, 1969. Similar to Blue Tit in appearanceFlower Colour : Dark lavender blue, star shapedFlowering Time : April-May Scented :   No Ultimate Height :  0.90 metres / 2 feet 11 inchesParentage : augustinii x fastigiatumHardiness : -15°C (5°F) Hardy in a sheltered site in most UK, Damaged in severest winters. Eventually many of these hybrids were used by the Waterers to improve the Knaphill azaleas. Tiny pointed leaves.Flower Colour : Yellow shaded pinkFlowering Time : May Scented :   No Ultimate Height :  0.60 metres / 1 feet 11 inchesParentage : ferrugineum x brachyanthumHardiness : -23°C (-10°F) Hardy anywhere in the UK and moderate parts of Europe such as Holland, southern Sweden, coastal Denmark, favourable parts of Germany etc.Group : Dwarf Hybrids up to 1m.. Rhododendron is a genus of 1,024 species of woody plants in the heath family (Ericaceae), either evergreen or deciduous. – – ‘Notes on Rhododendron Hybrids’, ibid., 1933-9. A good deal of work has been done both by nurserymen and amateurs with these aims in mind, and there are now many hybrids available which suit our conditions quite well. If you select any attributes with or without a plant name, you will see a much narrower selection of results taken only from the old RHS Plant Selector database. Possibly More Bushy than Polar Bear. Good in cold gardensFlower Colour : Fluorescent pinkFlowering Time : May Scented :   Yes Ultimate Height :  4.00 metres / 13 feet 1 inchesParentage : griersonianum x Countess of DerbyHardiness : -23°C (-10°F) Hardy anywhere in the UK and moderate parts of Europe such as Holland, southern Sweden, coastal Denmark, favourable parts of Germany etc.Group : Large Hybrids over 2m.. White flowers, flushed solferino purple; striped purple on outside. Blue green leaves, paler below, Loose trusses of amber coloured, flushed pink flowers, Highly recommended. See more ideas about rhododendron, hybrids, plants. The dates given are those of the editions current in 1975. Deep green hairy leaves. Dark green leaves.large trusses of deep pink flowers, paler within. (Bowers, 1936) Meanwhile many others began to hybridize azaleas with Rhododendron occidentale , Anthony Koster for one, and Slocock of Goldsworth Nurseries another. Leonardslee', Rhododendron 'Angelo Graham Stuart Thomas Sh Pk', Rhododendron 'arboreum album x sutchenense', Rhododendron 'arboreum ssp. Leaves held for one yearFlower Colour : Pink/rose blotchFlowering Time : March Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Hardiness : Group : Large Hybrids over 2m.. Produces rose-bengal flowers with darker red blotches in trusses of 13-14.Flower Colour : Rose-bengal, blotched dark redFlowering Time : late May Scented :   No Ultimate Height :  2.00 metres / 6 feet 6 inchesParentage : parentage unknownHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. Dark green leathery leaves, silvery fawn below. Plant resulting from cross-fertilization between genetically different parents of distinct species or hybrids. These are Aronense Hybrids that are an evergreen perennial shrub and fully hardy Rhododendron Azalea Geisha Red plant in flower in mid spring. Often early into flower and growth.Group : Compact & Medium Hybrids up to 2m.. A low growing compact shrub with pale foliage. It is included in an evolving list of plants carefully researched and chosen by RHS experts. Sun tolerant and heat resistant.Flower Colour : Lavender mauveFlowering Time : late May-June Scented :   No Ultimate Height :  3.00 metres / 9 feet 10 inchesParentage : ponticum hybridHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. A dome shaped plant with ovat, medium-sized leaves. An unnamed hybrid raised at RHS Gardens, Wisley, UK, by Francis Hanger when Curator there.Flower Colour : WhiteFlowering Time :  Scented :   No Ultimate Height :  0.50 metres / 1 feet 7 inchesParentage : aureum x degronianumHardiness : Group : Dwarf Hybrids up to 1m.. Forms a wide crowned small tree .Bright green leaves, upto 30cm long,covered with silky hairs when young, giving the whole plant a silvery appearance. These azaleas all derive from species of the subseries Luteum of the Azalea series, which in modern classifications ranks as a subgenus of Rhododendron (subg. Azalea, these can be deciduous, evergreen or semi deciduous. Knapp Hill Nursery, Goldsworth Old Nursery and Exbury began to hybridize in the late 1800s using Rhododendron calendulaceum and Rhododendron arborescens (both native to eastern U.S.), Rhododendron occidentale (native to the Pacific Northwest), and Rhododendron molle (native to China). It is a difficult garden plant in the South Eastern United States, and seems to object to the heat and humidity that often accompany the summers there. Mid-green leaves with purple petioles. Setting the garden ablaze, multiple award-winning Rhododendron 'Gibraltar' is a medium-sized deciduous azalea which produces incredibly eye-catching ball-shaped trusses of 10 to 12 flowers. Olive green leaves. it was the inspiration for the Pacific Horticulture logo, which was designed in the 1970s by artist Wynn Hayakawa, daughter of the late Margedant Hayakawa, a founding board member and former president of Pacific Horticultural Foundation. RHS Award of Garden Merit 1993. Susceptible to rust.Flower Colour : Vibrant pinkFlowering Time : April-May Scented :   No Ultimate Height :  0.30 metres / 0 feet 11 inchesParentage : Pioneer selfedHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Compact & Medium Hybrids up to 2m.. Super vigorous American Hybrid. They are: This plant will provide nectar and pollen for bees and the many other types of pollinating insects. Grows up to 6-15 ft. tall and wide (180-450 cm) Flower Colour : Flowering Time :  Scented :   No Ultimate Height :  4.00 metres / 13 feet 1 inchesParentage : Hardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. Forms large spreading shrub. One of the first man-made hybrids. AGM plants have been through a rigorous trial and assessment programme. Best if sheltered from cold winds.Flower Colour : Amber flushed pinkFlowering Time : April-May Scented :   No Ultimate Height :  2.00 metres / 6 feet 6 inchesParentage : yunnanense x concatenansHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Compact & Medium Hybrids up to 2m.. Very compact, low-growing evergreen with tight trusses of white flowers. Flower Colour : Deep crimsonFlowering Time :  Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Hardiness : Group : Large Hybrids over 2m.. A small shrub with oblong elliptical leaves. Recent introduction. Join Click for Elepidote and Lepidote Rhododendron plant descriptions Click for Deciduous and Evergreen Azalea plant descriptions: Elepidote Rhododendrons. These generally have large leaves and flowers. Many of their hybrids are still sold today. Bears trusses of dark red flowers with a blue tone., Very hardy. Compact pillar-like upright habit. 14 pink flowers per truss, with dark blotch. Pink buds opening to white flushed pink flowers with maroon and gold flecksFlower Colour : Flowering Time :  Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : degronianum ssp. Rustica Hybrids are a group of double-flowered azaleas produced by crossing double-flowered forms of Ghent azaleas with R. japonicum. Occidentale Hybrids are mainly the result of crossings of R. occidentale with R. molle and others; these are recognized by their later flowering and delicate pastel colours. Mon – Fri | 9am – 5pm, Join the RHS today and support our charity. very hardy shrub. Rhododendron The Hybrids / Azalea Hybrids - Deciduous. Pale pinkFlower Colour : Pale pinkFlowering Time : April Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : arboreum x irroratumHardiness : Group : Large Hybrids over 2m.. Evergreen shrub with trusses of lilac flowers mid-season, whitish-lilac inside with yellow/brownish markingsFlower Colour : Lilac, paler inside,yellow markingsFlowering Time : May Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : fortunei Mrs Charles Butler x unknownHardiness : Group : Large Hybrids over 2m.. Colour similar to Purple Splendour, deep purple with conspicuous blotch of dark red.Flower Colour : Deep purpleFlowering Time : May Scented :   No Ultimate Height :  1.20 metres / 3 feet 11 inchesParentage : Danamar x Purple SplendourHardiness : -23°C (-10°F) Hardy anywhere in the UK and moderate parts of Europe such as Holland, southern Sweden, coastal Denmark, favourable parts of Germany etc.Group : Compact & Medium Hybrids up to 2m.. Distribution of Western Azalea from USDA Plants Database. Recent introduction. Barely hardy at Exbury. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually. Rhododendron occidentale x 'Irene Koster' This is a deciduous shrub with massive displays of sweetly scented funnel-shaped blossoms in late spring. Slightly twisted light green leaves. Join the RHS today and support our charitable work, Keep track of your plants with reminders & care tips – all to help you grow successfully, For the latest on RHS Shows in 2020 and 2021, read more, RHS members get free access to RHS Gardens, Free entry to RHS members at selected times », Reduced prices on RHS Garden courses and workshops, General enquiries Flower Colour : Flowering Time :  Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : arboreum ssp. Accessed: 2020 May 15. Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. Very atttractive neat spreading variety. These plants will have a lot more details displayed including an image. Flower Colour : Flowering Time :  Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Hardiness : Group : Compact & Medium Hybrids up to 2m.. White flowers.. Best in a sheltered site.Flower Colour : WhiteFlowering Time : June-August Scented :   No Ultimate Height :  3.00 metres / 9 feet 10 inchesParentage : arboreum ssp delavayi x agastum x decorumHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. Forms a gnarled shrub, dark green leaves, puckered above,tawny indumentum below. Many, many hybrids have been made using species and hybrids to create a wide range of colors and flower shapes. yakushimanumHardiness : Group : Large Hybrids over 2m.. Evergreen tall shrub with enormous scented flowers, blush pink-white with pale green spots within, held in magnificent upright trusses. 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