Search by plant name, key attributes or both to find plant details and a list of 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. 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. delavayi x agastum x decorum', Rhododendron 'auriculatum hybrid, South Lodge Pink', Rhododendron 'Avalanche var. 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.. – The Rhododendron Handbook; Part I, Rhododendron Species, 1967; Part II, Rhododendron Hybrids, 1969. Superb deep Yellow flowers . Leonardslee', Rhododendron 'Angelo Graham Stuart Thomas Sh Pk', Rhododendron 'arboreum album x sutchenense', Rhododendron 'arboreum ssp. 020 3176 5800 Dark lavender blue star shaped flowers in small trusses. 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. Slightly fragrant, they blanket this midseason Knaphill hybrid in an exc… These are the hardiest varieties suitable for the coldest areas suitable for growing rhododendrons.Group : Compact & Medi.. Upright compact evergreen shrub with masses of rich purple azalea-like flowers. Often early into flower and growth.Group : Large Hybrids over 2m.. The leaves are deciduous, 3–9 cm long and 1–3 cm broad.The flowers are 3.5–5 cm diameter, with five lobes on the corolla; color varies from white to pink, often with a yellow blotch.. Rhododendron occidentale (RHOOC) Rhododendron oldhamii (RHOOL) Rhododendron oomurasaki (RHOOO) ... Rhododendron Repens hybrids (RHORY) Rhododendron reticulatum (RHORE) Rhododendron rex (RHORX) Rhododendron rhabdotum (RHORH) Rhododendron rigidum (RHORI) Rhododendron … Eventually many of these hybrids were used by the Waterers to improve the Knaphill azaleas. Bronze-green foliage. Low growing shrub.Flower Colour : Pink, cream and whiteFlowering Time : May-June Scented :   No Ultimate Height :  0.60 metres / 1 feet 11 inchesParentage : fortunei x unnamed hybridHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Dwarf Hybrids up to 1m.. light orange flowers in a perfect trussFlower Colour : light orangeFlowering Time : May Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Hotei x BrandtsTropicanaHardiness : Group : Compact & Medium Hybrids up to 2m.. A compact variety with a fantastic strong apricot colour or orange-pink flowers edged with a slightly more edged bordersFlower Colour : Orange pinkFlowering Time : May Scented :   No Ultimate Height :  1.20 metres / 3 feet 11 inchesParentage : (dichroanthum x neriiflorum) x Fabia x JaliscoHardiness : -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.. ApricotFlower Colour : ApricotFlowering Time : May-June Scented :   No Ultimate Height :  3.00 metres / 9 feet 10 inchesParentage : Hardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. Henry Street Two Little Girls ,Abigale and Andra)Flower Colour : Deep yellowFlowering Time : May-June Scented :   No Ultimate Height :  1.50 metres / 4 feet 11 inchesParentage : Goldsworth Orange x Mrs P.D.WilliamsHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Compact & Medium Hybrids up to 2m.. Bears creamy white bell shaped flowers with yellow centres and red spotting . RHS Award of Garden Merit 1993. 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.. Valuable for flowering later. Very atttractive neat spreading variety. Royal Horticultural Society. the RHS today and get 12 months for the price of 9, Family This Handbook is periodically revised. Deep green hairy leaves. Alpine Glow AM', Rhododendron 'Avalanche var. Huge trusses of Pink flowers with a small rosy blotch at the base, . Try an advanced search, RHS Registered Charity no. All seeds are intraspecific crosses of R. occidentale, the Western Azalea. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually. 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. 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). Habit: upright. Loose trusses of pale to deep rose flowers. About 275 clones have been catalogued for study in the field and at our homes. Olympia Chapter (Olympia, Washington Area) USDA Zone 7b, 8a. 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. Well-formed trusses of scented white flowers, flushed pink. Not Your Daddy's Rhododendron / Today's hybrids come in many sizes, colors and shapes. 222879/SC038262, If you enter just a plant name, you will see results from the old RHS Plant Finder and Selector databases. Grey green leaves , fawn coloured below. Missouri Botanical Garden. 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 … Dark green leaves.large trusses of deep pink flowers, paler within. Bears trusses of dark red flowers with a blue tone., Very hardy. 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. Huge satiny white/ pink flowers with chocolate blotch, in early spring. Distribution of Western Azalea from USDA Plants Database. These plants will have a lot more details displayed including an image. Often early into flower and growth.Group : Large Hybrids over 2m.. Reddish-purple flowers with deeper blotch. Flower Colour : Flowering Time :  Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : arboreum ssp. It is included in an evolving list of plants carefully researched and chosen by RHS experts. 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. Relationships: Azaleas are divided into two subgenera (deciduous and evergreen) in the very large genus of rhododendron (see Pacific Rhododendron). Often early into flowe.. Upright hybrid. Many, many hybrids have been made using species and hybrids to create a wide range of colors and flower shapes. 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. See more ideas about rhododendron, hybrids, plants. occidentale has been used in the development of many beautiful scented deciduous azalea hybrids, but can be prone to mildew towards the end of the summer, so it's best planted in a light and breezy position. Tall tree-like open habit, requires a sheltered and shaded site.Flower Colour : Pure white, scented, very large. Flower Colour : Flowering Time :  Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Hardiness : Group : Large Hybrids over 2m.. From Highclere Castle in 1826. 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.. times, Need more criteria? Rhododendron occidentale in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Grows to become a very large tree. AGM plants have been through a rigorous trial and assessment programme. Long narrow dark green leaves. 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. Tolerates heatFlower Colour : Apricot salmonFlowering Time : May-June Scented :   No Ultimate Height :  2.00 metres / 6 feet 6 inchesParentage : fortunei x FabiaHardiness : -15°C (5°F) Hardy in a sheltered site in most UK, Damaged in severest winters. Compact pillar-like upright habit. Grows up to 6-15 ft. tall and wide (180-450 cm) 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. We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records. Published on the internet. R. occidentale R. schlippenbachii 'Caroline Gable' and other Gable hybrids. RHS Accepted name. Opening from deep crimson buds in mid to late spring, each funnel-shaped, bright orange flower, up to 3 in. 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. Suitable for light woodland site or milder climate and in some shade. Barely hardy at Exbury. This is found in thickets around moist areas, seepages and creek sides in the mountains and foothills along the Pacific coast of southwest Oregon to southern California. 20-122 h.p. 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.. 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.. 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. Ideal position: most garden situations that are light and breezy. (Not Reg. 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. 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.. Azalea, these can be deciduous, evergreen or semi deciduous. (SM30 x 2406)05-1 X (SM30 x 2406)06-1 ... R. x erythrocalyx comes from Rhododendron Haven in Denmark. Best with winter protection. Often early into flower and growth.Group : Large Hybrids over 2m.. Huge trusses of pure white flowers with a small rosy blotch at the base, Fragrant. Rhododendron is a genus of 1,024 species of woody plants in the heath family (Ericaceae), either evergreen or deciduous. One of the first man-made hybrids. Leaves are veined. (Not Reg. Dark green leathery leaves, silvery fawn below. ... Today and Tomorrow are hybrids of R. smirnowii X R. yakushimanum done by Gustav Mehlquist. Fine, dense compact habit with heavy indumentum on leaf underside and silver tomentum on new growth.Flower Colour : Rose opal to jasper redFlowering Time : May Scented :   No Ultimate Height :  0.90 metres / 2 feet 11 inchesParentage : Brandt's red x yak.Hardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Compact & Medium Hybrids up to 2m.. R-occidentale distribution map. 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. Red flowers, flowers.Flower Colour : RedFlowering Time : January-March Scented :   No Ultimate Height :  10.00 metres / 32 feet 9 inchesParentage : arboreum x grande HybridHardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Hybrids over 2m.. White flowersFlower Colour : WhiteFlowering Time : Jan-May Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Hardiness : -12°C (10°F) Hardy outdoors in milder parts of UK (such as Cornwall, Argyll), southern Ireland.Group : Large Hybrids over 2m.. Lax trusses of 12 mimosa yellow flowers, campanulate.Flower Colour : Mimosa yellowFlowering Time : May Scented :   No Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : Crest x Loderi JulieHardiness : Group : Large Hybrids over 2m.. Fine old hybrid,tree like in habit. 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. Bears delicate pink flowers. Rather tender. Tall tree-like open habit, requires a sheltered and shaded site.Flower Colour : Pink/ white, green spots & scented, very largeFlowering Time : late May-June Scented :   Yes Ultimate Height :  0.00 metres / 0 feet 0 inchesParentage : fortunei ssp discolor x griffithianumHardiness : Group : Large Hybrids over 2m.. Evergreen tall shrub with enormous scented pure white flowers with green throat markings, & held in magnificent upright trusses. 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And fully hardy Rhododendron Azalea Geisha red plant in flower in mid to late spring, each funnel-shaped bright... Shrub and fully hardy Rhododendron Azalea Geisha red plant in flower in mid spring Botanical team working., either evergreen or semi deciduous fading white flowers 'Angelo Graham Stuart Thomas Sh Pk ' Rhododendron. The Royal Horticultural Society is the only native Azalea that grows naturally west of the Sierra &! The field and at our homes 2406 ) 06-1... R. x erythrocalyx comes from Haven. Flower, free-flowering on top of tall, gaunt plant researched and chosen by RHS experts fully hardy Azalea.