Species
The species of the genus Rhododendron, which is part of the Ericaceae family. Depending on the source,
there are over 1,000 wild species.
The majority being native to the eastern Himalaya and southeast Tibet, along with the islands of Java, Sumatra, Borneo,
New Guinea, and the Philippines. The rest are broadly spread throughout the northern hemisphere in relatively
small isolated populations, including Japan, northwestern North America, the Appalachian, and the Caucasus Mountains.
Rhododendron has eight traditionally accepted subgenera which include Azaleastrum; Candidastrum; Hymenanthes;
Mumeazalea; Pentanthera; Rhododendron; Therorhodion; Tsutsusi. The 2 subgenera are generally known as 'Azaleas' are:
Pentanthera, which comprises the deciduous azaleas, and Tsutsusi, which includes evergreen azaleas
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Rhododendron arboreum Seedlings
Large evergreen shrubs or trees, often growing to 100 ft. in the wild, (hence its name, meaning "tree-like") but rarely over 40 ft. in cultivation. Leaves dark green with white to silver-colored indumentum below. Flowers white / pink / red.Flower Colour: white / pink / red.Flowering Time: March-April Scented: No Ultimate Height : 6.00 metres / 1..
Rhododendron auriculatum
Forms a wide crowned small tree .Bright green leaves, up to 30cm long,covered with silky hairs when young, giving the whole plant a silvery appearance. Superb white, almond scented flowers, Needs shelter and plenty of water in dry conditions.Flower Colour: White, almond scentedFlowering Time: July-August Scented: Yes Ultimate Height : 10.00 metr..
Rhododendron auriculatum (from seed)
Forms a wide crowned small tree .Bright green leaves, up to 30cm long, covered with silky hairs when young, giving the whole plant a silvery appearance. Superb white, almond scented flowers. Needs shelter and plenty of water in dry conditions.Flower Colour: White, almond scentedFlowering Time: July-August Scented: Yes Ultimate Height : 3.00 metr..
Rhododendron calostrotum ssp keleticumF21756
Dwarf, generally prostrate or mounding shrubs with small dark shiny green leaves. Flowers are pale purple to purple-crimson with crimson spots on the upper lobes in mid- to late springFlower Colour: Flowers are pale purple to purple-crimsonFlowering Time: June-July Scented: No Ultimate Height : 0.15 metres / 0 feet 5 inchesParentage : Hardiness ..
Rhododendron ciliatum, Deep rose form
Compact shrub if grown in full light.. Attractive light brown peeling bark. Dark green leaves,hairy above and fringed with longer stiff hairs.Deep rose flowers.Flower Colour: Deep roseFlowering Time: March-May Scented: No Ultimate Height : 1.00 metres / 3 feet 3 inchesParentage : Hardiness : -15 to -18°C (5°F to 0°F) Hardy in all but the coldest..
Rhododendron decorum(South Lodge seedling)
Handsome tree like species with matt green leaves up to 15cm long. Scented white flowers often 7.5 x 8.5cm, An excellent vigorous easily grown variety. Worth trying on neutral soils.Flower Colour: White, scentedFlowering Time: late April-May Scented: Yes Ultimate Height : 6.00 metres / 19 feet 8 inchesParentage : Hardiness : -15 to -18°C (5°F to..
Rhododendron fastigiatum
Shoots with dark brown to black scales. Long broadly funnel-shaped, light purple to purplish blueFlower Colour: Light purple to blueFlowering Time: April-May Scented: No Ultimate Height : 1.00 metres / 3 feet 3 inchesParentage : Hardiness : -23°C (-10°F) Hardy anywhere in the UK and moderate parts of Europe such as Holland, southern Sweden, coas..
Rhododendron fortunei ssp discolor
Tree like in habit with long dark green leaves, scented white or pink flowers.Flower Colour: White or pink, scentedFlowering Time: June-July Scented: Yes Ultimate Height : 5.00 metres / 16 feet 4 inchesParentage : Hardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Large Species over 2m..
Rhododendron impeditum
Broadly funnel-shaped bluish mauve, purplish blue or pinkish purple Matt green leaves with brown scales below.Flower Colour: Bluish mauveFlowering Time: April-May Scented: No Ultimate Height : 0.25 metres / 0 feet 9 inchesParentage : Hardiness : -18°C (0°F) Hardy in all but the coldest parts of UK.Group : Dwarf Species up to 1m..
Rhododendron johnstoneanum
Spreading habit, bristly twigs, attractive reddish brown peeling bark. Dark green hairy leaves. Creamy yellow flowers. Needs shelter from cold winds.Flower Colour: Creamy yellowFlowering Time: May Scented: No Ultimate Height : 3.00 metres / 9 feet 10 inchesParentage : Hardiness : -12 to -15°C (10°F to 5°F) Hardy in a sheltered site in most UK, D..
Rhododendron neriiflorum ssp neriiflorum
Popular plant, compact in full light. Neat dark green leaves, reddish brown below. Fleshy bell-shaped crimson flowers. needs good drainage Highly recommended.Flower Colour: CrimsonFlowering Time: April-May Scented: No Ultimate Height : 2.00 metres / 6 feet 6 inchesParentage : Hardiness : -15 to -18°C (5°F to 0°F) Hardy in all but the coldest par..
Rhododendron scopulorum
Upright species, may grow beyond 2m in a mild garden. Prefers a north wall. Mid green narrow leaves, scented white flowers with a gold throat.. Makes a good cold greenhouse plant.Flower Colour: Scented white, gold throatFlowering Time: April-May Scented: Yes Ultimate Height : 2.00 metres / 6 feet 6 inchesParentage : Hardiness : -10°C to -8°C (15..
Rhododendron trichanthum Honeywood
Flowers in clusters of 3, widely funnel-shaped, 5-lobed,spectrum violet, outside light cyclamen purple. Upright shrub to 2m., with small, hairy foliage.Flower Colour: Light cyclamen purpleFlowering Time: June-July Scented: No Ultimate Height : 5.00 metres / 16 feet 4 inchesParentage : Hardiness : -18°C (0°F) Hardy in all but the coldest parts of..
Rhododendron yunnanense Red Throat
Attractive upright shrub with narrow dark green leaves, deep maroon young stems and leaf stalks.Large waxy white flowers, flushed pink with a red throat. N.B.Not Rh. Red Throat.Flower Colour: Waxy white, flushed redFlowering Time: April-May Scented: No Ultimate Height : 3.00 metres / 9 feet 10 inchesParentage : Hardiness : -1..
