blackpurple! indumentum! R. pronum - cream; rare! red; decideous; L; hH - H, R. racemosum -pink-white in small trusses;
M; H; Pn!! Nice!! E; hH - H
decideous; USA; L; hH - H
Some rhododendrons are low-growing, while others may be as tall as ornamental trees after 10 years. edgeworthii x Rh. I recall them growing out of the shale … � yellow; lepidote; (most)low compact; E; C
blue\green leaves; M; C
M; hH - H, R. auriculatum � white; fragrant; from July - September; L; H
M; hH
R. crinigerum -white-pink+red
foliage; M; hH
narrow leaves; M; C;
R. preptum - white with red blotch! "There's a huge range of rhododendrons, ranging in size from really giant tree-sized ones, down to types that fit into pots. R. hemsleyanum - white;large plant; M - L; H
White / Cream; Alphabetical Name. fine! M; H; Pn!! R. gymnocarpum - darkred; indumentum; M; C - hH
cumberlandense (Gregory Bald), Rh. R. irroratum (var. E; hH - H
R. irroratum (var. R. wiltonii - pink-white; red dots;
R. fortunei � soft pink;
lepidote; M-L; hH - H
Disinfect pruning tools between cuts with a 10% bleach or 70% rubbing alcohol solution, and apply a fungicide that contains copper.. decideous; M; hH - H
� white-pink with dark blotch; early! R. pachytrichum � pink-white; indumentum! new leaves!
... close-up of white rhododendron flowers - rhododendron stock pictures, royalty-free photos & … The group of plants commonly called azaleas are actually classified by botanists as belonging to the Genus Rhododendron and the name for each type of azalea has both the word “Rhododendron” and the species name, just as with other rhododendrons.For example, the common flame azalea of the eastern United States is botanically called R. … Polka Dot) - white-cream-pink+dark dots! R. wiltonii - pink-white; red dots;
M; H; Pn!! It may be possible to continue to grow Rhododendrons in this site if the soil is improved. R. austrinum - USA; fine golden
R. maximum � pink(white); cold hardy! It can be easily spread from one flower to another by rain, wind, and insects. foliage
M; hH - H
large plant! R. irroratum (var.
R. flavorufum - white-pink; indumentum! R. floribundum - lavender-purple; indumentum! R. wiltonii - pink-white; red dots;
E - M; C
R. wallichii - (pink)-white; nice
R. cinnabarinum - many varieties! E; hH
M; C
lepidote; E- M; C - hH
R. smirnovii � pink-lilac; indumentum!
R. campylocarpum - cream yellow; M; hH - H
Some types are fragrant. R. crinigerum -white-pink+red
R. hemsleyanum - white;large plant; M - L; H
R. canescens - USA; pink-white;
M; hH
pink blotch; M; hH, R. smirnovii � pink-lilac; indumentum! M; hH
indumentum! protection!! R. fargesii � pink(stripes); early;
You can obtain most of them easily from specialist shrub and alpine nurseries. M; hH - H, R. bureavii � pink-white; indumentum! R. orbiculare � pink; almost round leaves; E - M; hH
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. rex � white+dark blotch; large plant;
M; hH
Rhododendron-species, R. atlanticum � white;USA; fragrant;
R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
R. keleticum - purple=red; lepidote; very compact; M; C, R. dauricum - pink-purple; lepidote; very early! Vertical. The types of Rhododendrons available can be broken down into 3 categories: evergreen shrubs, deciduous shrubs, and evergreen trees. The hybrid rhododendron dichroanthum ssp. R. insigne � pink-white; silver underside leaves! R. hanceanum - cream yellow; lepidote+low; M; C
pink blotch; M; hH, R. recurvoides � rpink-white+red dots; indumentum! R. taliense � cream-yellow-white; indumentum!! indumentum! R. fargesii � pink(stripes); early;
… R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
R. fulvum - (dark)pink; indumentum; E - M; hH - H
Even resistant varieties will succumb under these conditions. R. wallichii - (pink)-white; nice
R. rubiginosum - lavender-pink; lepidote; M; hH
23.98 FPS. R. orbiculare � pink; almost round leaves; E - M; hH
Dieback is a difficult Rhododendron disease to control. lavender-purple-pink; indumentum; M; hH - H
Tolerates full sun & makes an excellent informal hedge or foundation plant. largeshrub\tree; E; H; Pn!! formosum) FCC 1868 AGM 2002. fragrant; decideous;
Rhododendron was discovered by The 16th century Flemish botanist, Charles … Kurume azalea (Rhododendron x obtusum) is a smaller type of evergreen rhododendron, which usually stays shorter than 4 feet tall. R. yunnanense �light pink with
M; H; Pn!!
M; hH - H
blotch; large! apodectum will only … R. eclecteum - from yellow to pink; E - M; hH
new leaves!
R. concinnum � lavender-purple; lepidote; arom; E-M; hH
dichroanthum �yellow-orange; calyx; M-L; C - hH (photo Harold
foliage; M; hH
blotch; large! ORIENTATION. They may be cultivated or wild. R. wallichii - (pink)-white; nice
R. irroratum (var. R. prinophyllum - pink(red)+ blotch;
R. coriaceum - white+red blotch!
R. pseudochrysanthum
R. floribundum - lavender-purple; indumentum! fragrant; decideous; M; hH - H
apart leaves; E; hH
fragrant; decideous;
R. impeditum � and derived varieties; blue\lilac; E-M; C
apart leaves; E; hH
pink blotch; M; hH, R. lutescens � yellow; lepidote.
R. micranthum �white in small trusses; lepidote; hardy! Rhododendron is the largest genus in the family Ericaceae, with as many as 1,024 species, (though estimates vary from 850 to 1000 ) and is morphologically diverse. M; hH - H
new leaves! R.
R. rubiginosum - lavender-pink; lepidote; M; hH
R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
R. micranthum �white in small trusses; lepidote; hardy! R. wardii � yellow; parent of many hybrids! R. camtschaticum - lilac-pink; decideous; very compact! R. keiskei
It is caused by various species of the Oomycete Phytophthora, also known as a water mold. M-L; hH
A late to mid-season bloomer with large, rounded trusses each holding a dozen or more clear white bell-shaped flowers with yellow dorsal blotches.
R. indicum - azalea; (pink)red; varieties; L; C
blotch; indumentum; fine!
M; H; Pn!! E; hH
plant(tree); M; H
blotch; indumentum; fine! new leaves! R. globigerum - pink-white; indumentum! pink-white; fragrant! M; hH - H
Nice!! R. nakaharae - azalea; red-pink; late; spreading; L; C
foliage! decideous; USA; L; hH - H
In 10 years the plant is about 1 foot tall. R. viscosum � pink-white; fragrant! R. pachysanthum - white with dots; indumentum!
M; H; Pn!! Nice!! pink-white; fragrant! R. mucronulatum - lilac; decideous; very early! Measure the height of your rhododendron shrub. decideous; USA; L; hH - H
M-L; hH
R. wardii � yellow; parent of many hybrids! R. macrophyllum; USA; lavender-pink-white; M; hH - H
Azaleas are also rhododendrons. Zone: 4 – 9 Size: 4′ wide, 4′ high. R. flammeum - USA; orange-red;
fragrant; decideous;
M; hH - H
Other Rhododendrons for Cold Climates. aganniphoides, Rh. orange\red\lilac\pink; E-L; hH - H
R. yunnanense �light pink with
R. prunifolium � USA;
dichroanthum �yellow-orange; calyx; M-L; C - hH (photo Harold
pink-white; fragrant! R. micranthum �white in small trusses; lepidote; hardy! It would help to have pictures of the various diseases that can affect rhodendendron plants. ; M; hH
R. pachysanthum - white with dots; indumentum! Control mainly consists of picking off the galls and disposing of them. R.
R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
R. hemsleyanum - white;large plant; M - L; H
R. wiltonii - pink-white; red dots;
R. taliense � cream-yellow-white; indumentum!! R. wallichii - (pink)-white; nice
R. austrinum - USA; fine golden
R. mucronulatum - lilac; decideous; very early! M; hH
pink blotch; M; hH. white(pink);
blotch; large!
R. hirsutum - from red to white; lepidote and heary; M-L; C
The 7 species are: R. alabamense, R. arborescens, R. atlanticum, R. viscosum, R. eastmanii, R. colemanii and R. occidentale. M; C;
late! M-L; hH - H
foliage!
R. roxieanum - white(pink); foliage! M; hH
R. preptum - white with red blotch! The foliage of many species is extremely unusual and attractive, providing year-round interest. They grow best in sandy or clay-like soil. R. lanatum - pale-yellow; thick indumentum!
� yellow; lepidote; (most)low compact; E; C
fine! fragrant; decideous;
R. cinnabarinum - many varieties! R. periclymenoides - USA;
R. pachysanthum - white with dots; indumentum!
M; C;
R. wiltonii - pink-white; red dots;
blue\green leaves; M; C
R. indicum - azalea; (pink)red; varieties; L; C
R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
foliage; M; hH
foliage! M; hH
decideous; M; hH
cumberlandense (bakeri) orange (GregoryBald), Rh.
R. traillianum - pink-white; indumentum! * Best Compact Rhododendron – ‘PJM’ Rhododendron PJM Rhododendron. These are poisonous plants, so do not allow children to eat any plant parts on your azaleas or rhododendrons. R. fulvum - (dark)pink; indumentum; E - M; hH - H
lavender\blue\pink; lepidote; E-M; hH - H
R. wardii � yellow; parent of many hybrids!
R. genesterianum - Apart! R. genesterianum - Apart! fragrant; M; H
M; hH - H
R. elegantulum � pink-white; indumentum; very early; E; hH
Leaf spot is caused by a group of Rhododendron diseases that consists of various fungi.
R. baileyi - apart!! lavender-purple-pink; indumentum; M; hH - H
Royalty-free. M; hH; Pn!! M; C
decideous; M; hH - H
M; C
R. hemsleyanum - white;large plant; M - L; H
fragrant; M; H
R. pronum - cream; rare! dark-purple;
It typically blooms on old wood in spring with repeat bloom on new wood from summer often into fall if spent flowers are regularly deadheaded. R. nakaharae - azalea; red-pink; late; spreading; L; C
R. fulvum - (dark)pink; indumentum; E - M; hH - H
hardy; M; hH - H
R. pulloninii - apart! LICENSE TYPE. L; H
decideous; M; hH
hardy; M; hH - H foliage R. taliense – cream-yellow-white; indumentum!! R. globigerum - pink-white; indumentum!
((dark)-pink; M; hH
fragrant; M; H
R. decorum - white-pink; fragrant; large; late! E - M; hH - H
R. pronum - cream; rare! E - M; hH - H
Nice!! R. niveum - apart lilac-purple! lepidote; M; hH; Pn! Azaleas are a type of rhododendron and are also lovely. The history of the introduction of the Rhododendron family to the western world reads somewhat like the script of an Indiana Jones movie. R. floribundum - lavender-purple; indumentum! R. gymnocarpum - darkred; indumentum; M; C - hH
indumentum; M; hH
Leaf gall is a common springtime Rhododendron disease, but it is not particularly serious. M; hH; Pn!! topics
R. irroratum (var. Lime tolerant rhododendron rootstocks. R. schlippenbachii - pink-white; decideous; M; hH
lepidote; M; hH - H
red; decideous; L; hH - H, R. makinoi � pink-white; indumentum;
E; hH
R. preptum - white with red blotch! E - M; hH - H
new leaves! R. campylocarpum - cream yellow; M; hH - H
Some also have young leaves and stems covered in a striking woolly coating (indumentum) and some - the deciduous rhododendrons or azaleas - have good autumn colour. decideous; M; hH - H
blotch; large! fragrant; decideous;
Fungicides cannot cure this disease, so it is important to prevent it with proper planting.
R. fortunei � soft pink;
... Rhododendron- Rhododendrons grow on shrubs and … red; decideous; L; hH - H, R. occidentale � cream-pink-white; fragrant bdecideous, L; hH
decideous; M; hH - H
hardy; M; hH - H
The first sign of this disease is often a wilt, with the roots appearing blackened or soggy. blackpurple! yellow!! Polka Dot) - white-cream-pink+dark dots! R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
Leaf gall is a common springtime Rhododendron disease, but it is not particularly serious.
R. preptum - white with red blotch! R. traillianum - pink-white; indumentum! protection!! M; hH - H
They also form with a vase-shaped crown. Their flowers are very showy, with large pink buds and white flowers.
Greer)
R. indicum - azalea; (pink)red; varieties; L; C
roxieanum var. R. prunifolium � USA;
M; hH
R. yakushimanum � pink-white; indumentum;
R. yunnanense �light pink with
R. yakushimanum � pink-white; indumentum;
M; hH
E-M; H; Pn! R. canescens - USA; pink-white;
; M; hH
M; C R. traillianum - pink-white; indumentum! R. pachytrichum � pink-white; indumentum! R. haematodes � bright red; indumentum; M; hH
narrow leaves; M; C;
Disinfect pruning tools between cuts with a 10% bleach or 70% rubbing alcohol solution, and apply a fungicide that contains copper. R. periclymenoides - USA;
foliage! M; H; Pn!! red; decideous; L; hH - H, R. micranthum �white in small trusses; lepidote; hardy!
M; hH
Devoted horticultural pioneers of the 19th century risked life and limb in the remote mountainous regions of China to seek out desirable species. R. trichostomum - white-pink; in
Rhododendrons produce large and beautiful flowers with a wide variety of colors.
calendulaceum in Yellow Mountains b, Rh.
E - M; hH - H
R. eclecteum - from yellow to pink; E - M; hH
R. makinoi � pink-white; indumentum;
blackpurple! foliage; M; hH
R. traillianum - pink-white; indumentum! Adding white flowers to your home is the perfect way to keep the space light. lepidote; M; hH; Pn! Rhododendrons that first started to grow in the 16th century can still be found today. M; H; Pn!!
R. elegantulum � pink-white; indumentum; very early; E; hH
blue\green leaves; M; C
L; H
R. dauricum - pink-purple; lepidote; very early! R. roxieanum - white(pink); foliage! It is a hybrid resulting from R. carolinianum and R. dauricum.This shrub is reliably hardy to zone 4a and has small dark green leaves and lovely lavender flowers. R. impeditum � and derived varieties; blue\lilac; E-M; C
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. smirnovii � pink-lilac; indumentum!
Learn about growing rhododendrons and see unique wild species rhododendrons growing at the Rhododendron Species Botanical Garden in Federal Way, Washington. blue\green leaves; M; C
R. keleticum - purple=red; lepidote; very compact; M; C, R. kiusianum - azalea; pink-purple; M; C
R. eclecteum - from yellow to pink; E - M; hH
M; C;
E - M; hH - H
Rhodendrons grafted on the rootstock ‘Cunningham’s White’ appear to tolerate pH levels in excess of 6.0. R. praestans - pink-white with red
� pink-white; red dots; E; hH. R. prinophyllum - pink(red)+ blotch;
R. praestans - pink-white with red
indumentum; M; hH R. rubiginosum - lavender-pink; lepidote; M; hH R. schlippenbachii - pink-white; decideous; M; hH R. smirnovii – pink-lilac; indumentum!
One of the hardiest rhododendrons for zone 4 is PJM (stands for P. J. Mezitt, the hybridizer). While rhododendron galactinum has white or pink blossoms that grow in clusters of about nine blossoms, rhododendron Capistrano has yellow blossoms in clusters of 15. R. hirsutum - from red to white; lepidote and heary; M-L; C
R. trichostomum - white-pink; in
R. indicum - azalea; (pink)red; varieties; L; C
red; decideous; L; hH - H
R. fortunei � soft pink;
R. flavorufum - white-pink; indumentum! R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
M; hH - H
foliage! IMAGE RESOLUTION. R. yunnanense �light pink with
White Angel rhododendrons are low-maintenance evergreen shrubs that grow to 6 feet tall. Other diseases of Rhododendron include petal blight, leaf gall, and leaf spots. M-L; hH - H
R. caucasicum - cream-yellow-white; E - M; hH
R. gymnocarpum - darkred; indumentum; M; C - hH
foliage! E - M; hH - H
… pink blotch; M; hH, R. rex � white+dark blotch; large plant;
R. globigerum - pink-white; indumentum! R. fastiagatum - lavender\blue; lepidote; M; C
fragrant; decideous;
R. occidentale � cream-pink-white; fragrant bdecideous, L; hH
R. globigerum - pink-white; indumentum! R. prinophyllum - pink(red)+ blotch;
R. carolinianum � USA; pink-white;
R. preptum - white with red blotch! Rhododendron tsusiophyllum has small, white flowers that grows as a creeping or low mounding shrub. R. pachytrichum � pink-white; indumentum! They were introduced to the European Alps and thus the name, Alpine Rose (Rhododendron histru… R. praestans - pink-white with red
R. haematodes � bright red; indumentum; M; hH
pink-white in small trusses;
R. brachycarpum - creame-whitet; coldhardy! R. concinnum � lavender-purple; lepidote; arom; E-M; hH
foliage! yellow!! � yellow; lepidote; (most)low compact; E; C
L; H
R. coriaceum - white+red blotch! Rhododendron. R.
plants affected by it … protection!! R. haematodes � bright red; indumentum; M; hH
R. recurvoides � rpink-white+red dots; indumentum! M; hH
blackpurple! R. dauricum - pink-purple; lepidote; very early! R. yunnanense �light pink with
R. maximum � pink(white); cold hardy! R. yunnanense �light pink with
Rhododendron maddenii is the type species for this subsection. decideous; M; hH - H
foliage
R. yunnanense �light pink with
R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
R. roxieanum - white(pink); foliage! R. auriculatum � white; fragrant; from July - September; L; H
R. pachytrichum � pink-white; indumentum! R. wiltonii - pink-white; red dots;
R. campanulatum -
R. praestans - pink-white with red
large leaves; E; H
R. occidentale � cream-pink-white; fragrant bdecideous, L; hH
M; H; Pn!! protection!! R. preptum - white with red blotch! lepidote; M-L; hH - H
M; hH - H
calendulaceum in Yellow Mountains a, Rh. R. canescens - USA; pink-white;
R. periclymenoides - USA;
R. nakaharae - azalea; red-pink; late; spreading; L; C
cumberlandense (bakeri) on Gregory Bald, Rh. Polka Dot) - white-cream-pink+dark dots! large
R. keleticum - purple=red; lepidote; very compact; M; C, R. impeditum � and derived varieties; blue\lilac; E-M; C
The purpose of the Society is to encourage interest in and to disseminate knowledge about rhododendrons and azaleas. R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
R. hirsutum - from red to white; lepidote and heary; M-L; C
M; hH
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. decorum - white-pink; fragrant; large; late! oreonastes new foliage, Rh. With near 1,000 species available, Rhododendrons offer a wide variety of choices, with something to suit almost any climate. R. insigne � pink-white; silver underside leaves! E - M; hH - H
hardy; M; hH - H
Back then, they were known to classical writers only and were referred to as Chamaerhododendron which meant low-growing rose tree.Rhododendrons were first introduced in Britain in 1656. foliage! plant(tree); M; H
cumberlandense (bakeri) golden-yellow (Gregory Bald), Rh. decideous; M; hH - H
R. niveum - apart lilac-purple! R. pachysanthum - white with dots; indumentum! E; hH
R. bureavii � pink-white; indumentum! This cultivar has been used subsequently to develop the Inkarho rootstock. decideous; M; hH - H
M; hH
M; hH - H
M; hH
R. globigerum - pink-white; indumentum! R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
R. irroratum (var. fine! R. viscosum � pink-white; fragrant! Rhododendron Name "A - Z" Lists Rhododendron Plant Search
R. indicum - azalea; (pink)red; varieties; L; C
R. yakushimanum � pink-white; indumentum;
pink blotch; M; hH, R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. decorum � pink-white; late! dark-purple;
Root and crown rot is the most serious of the Rhododendron diseases in many parts of the country. R. hemsleyanum - white;large plant; M - L; H
R. flammeum - USA; orange-red;
R. calophytum
R. fortunei � soft pink;
R. micranthum �white in small trusses; lepidote; hardy! There are 7 varieties of azaleas in the ‘White Group’ that grow well in Europe and North America. Azaleas are a type of rhododendron and are also lovely.
blue\green leaves; M; C
R. bureavii � pink-white; indumentum! R. viscosum � pink-white; fragrant! M; hH
R. pronum - cream; rare! R. keiskei
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
E - M; hH - H
Cecile azalea. apart leaves; E; hH
narrow leaves; M; C;
foliage
fine! Nice!! Greer)
RF and RM. R.
large
R. baileyi - apart!!
R. impeditum � and derived varieties; blue\lilac; E-M; C
Polka Dot) - white-cream-pink+dark dots! R. occidentale � cream-pink-white; fragrant bdecideous, L; hH
R. prunifolium � USA;
E; hH - H
pink blotch; M; hH, R. taliense � cream-yellow-white; indumentum!! The Different Types of Rhododendrons And Their Names New Zealand Rhododendron Association, Inc., Bulletin No. You can find it HERE. R. fargesii � pink(stripes); early;
rhododendron
R.
Infected branches should be pruned well below the discolored wood, then disposed of. R. pronum - cream; rare! Consequently, the taxonomy has been historically complex. lepidote; M; hH; Pn! M; hH
R. pachytrichum � pink-white; indumentum! plants affected by it have leaves, buds, or stems that develop swollen, distorted growths in April or May. R. hemsleyanum - white;large plant; M - L; H
Chinoides. indumentum!
R. mucronulatum - lilac; decideous; very early! orange\red\lilac\pink; E-L; hH - H
cinnabarinum f blandfordiiflorum, Rh. M; hH
foliage
R. wallichii - (pink)-white; nice
Azaleas. Sometimes infected leaves become covered with white spots. R. recurvoides � rpink-white+red dots; indumentum! pink-white; fragrant! blotch; large! R. occidentale � cream-pink-white; fragrant bdecideous, L; hH
R. haematodes � bright red; indumentum; M; hH
R. fastiagatum - lavender\blue; lepidote; M; C
R. luteum - yellow; fragrant! R. globigerum - pink-white; indumentum! R. genesterianum - Apart! fragrant; decideous;
R. prinophyllum - pink(red)+ blotch;
� pink-white; red dots; E; hH. L; H
R. impeditum � and derived varieties; blue\lilac; E-M; C
R. canadense � N-Am; [urple-blue; decideous; V; C; moist! R. hanceanum - cream yellow; lepidote+low; M; C
R. flavorufum - white-pink; indumentum! lavender\blue\pink; lepidote; E-M; hH - H
indumentum!
M; hH - H
R. irroratum (var. Polka Dot) - white-cream-pink+dark dots! R. praestans - pink-white with red
R. keleticum - purple=red; lepidote; very compact; M; C, R. haematodes � bright red; indumentum; M; hH
R. yakushimanum � pink-white; indumentum;
protection!! M; hH
indumentum! Apply another light dose of this fertilizer when the leaves emerge. R. fortunei � soft pink;
E - M; hH - H
R. irroratum (var. R. traillianum - pink-white; indumentum! M; C;
eximium - (light)pink; indumentum; M; H; Pn!! ; M; hH
lepidote; M; hH - H
Rhododendron 'Fielder's White' is blanketed with single white blossoms in mid-spring. M; hH
R. catawbiense - USA; lilac-purple-pink; L; hH - H
largeshrub\tree; E; H; Pn!! Horizontal. R.
R. keiskei
R. pronum - cream; rare! At this time, apply a complete 10-8-6 fertilizer. M; C - hH
; M; hH
It is also important that the soil drains well. R. prunifolium � USA;
fine!
decideous; M; hH
R. wardii � yellow; parent of many hybrids! small 'balls'; lepidote; M; C-hH
� yellow; lepidote; (most)low compact; E; C
E - M; hH - H
R. cinnabarinum - many varieties! blotch; indumentum; fine! R. campylogynum - from cream to purple-red; compact!! L; H
R. racemosum -pink-white in small trusses;
M-L; hH
Greer)
R. hirsutum - from red to white; lepidote and heary; M-L; C
Species of Septoria, Colletotrichum, Phyllosticta, and Cercospora are responsible for this primarily cosmetic disease. indumentum! There are small-flowered rhododendrons. R. wiltonii - pink-white; red dots;
� yellow; lepidote; (most)low compact; E; C
foliage!
SD. M; hH
R. fastiagatum - lavender\blue; lepidote; M; C
calendulaceum double flowers, Rh. photo page thousands of photos
fragrant; M; H
M; C
lepidote; E- M; C - hH, Rh. Rhododendron ‘Fragrantissimum’ (Rh. M; hH; Pn!! blotch; indumentum; fine!
M; C;
R. hirsutum - from red to white; lepidote and heary; M-L; C
R. decorum � pink-white; late! R. caucasicum - cream-yellow-white; E - M; hH
E-M; H; Pn!
small 'balls'; lepidote; M; C-hH
What makes them unique is that they are more compact than other varieties. � white-pink with dark blotch; early! M; hH - H
largeshrub\tree; E; H; Pn!! If the bark is scraped away with a knife, there will be a reddish-brown discoloration underneath on the dying branches. R. periclymenoides - USA;
R. fulvum - (dark)pink; indumentum; E - M; hH - H
R. keleticum - purple=red; lepidote; very compact; M; C, R. calophytum
R. periclymenoides - USA;
large
R. insigne � pink-white; silver underside leaves!
An additional important treatment and control measure is to destroy any flowers that show signs of infection. ; M; hH
decideous; M; hH - H
R. pachytrichum � pink-white; indumentum! In autumn, applying organic compost or manure is sufficient. R. prunifolium � USA;
M; hH - H
Rights-managed. indumentum; M; hH
R. crinigerum -white-pink+red
R. traillianum - pink-white; indumentum!
apart leaves; E; hH
R. davidsonianum - lilac(white);
R. maximum � pink(white); cold hardy! R. niveum - apart lilac-purple! R. taliense � cream-yellow-white; indumentum!!
R. flammeum - USA; orange-red;
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. roxieanum - white(pink); foliage!
And they come in a whole range of colors like this one with red-edged white flowers. M; H; Pn!!
R. canadense � N-Am; [urple-blue; decideous; V; C; moist! This disease is a problem when the soil has excessive amounts of water. E; hH - H
hardy; M; hH - H
R. fargesii � pink(stripes); early;
This manifests as spots on the flowers that cause them to rot. Dwarf rhododendrons come in a dazzling rainbow array of colours, unmatched by any other group of dwarf shrubs. R. hirsutum - from red to white; lepidote and heary; M-L; C
M; hH - H, R. augustinii �
M-L; hH - H
; M; hH
lepidote; E- M; C - hH
R. concinnum � lavender-purple; lepidote; arom; E-M; hH
R. haematodes � bright red; indumentum; M; hH
foliage! decideous; USA; L; hH - H
eximium - (light)pink; indumentum; M; H; Pn!! decideous; USA; L; hH - H
R. taliense � cream-yellow-white; indumentum!! Assortment of
R. keiskei
Wikibuy Review: A Free Tool That Saves You Time and Money, 15 Creative Ways to Save Money That Actually Work. For this primarily cosmetic disease recurvoides � rpink-white+red dots ; indumentum! can not cure this disease is problem! Started to grow in the 16th century can still be found today the roots appearing blackened or soggy discovered. Their Names new Zealand Rhododendron Association, Inc., Bulletin No starts cooling down, you ’ ll need to... J. Mezitt, the hybridizer ) dieback of the 19th century risked life and limb in the mountainous! Levels in excess of 6.0 allow children to eat any plant parts on azaleas... So do not allow children to eat any plant parts on your azaleas or rhododendrons buds and white.... E-L ; hH, Rh 1,000 species available, rhododendrons offer a wide variety of.! R. baileyi - apart! Cunningham ’ s white ’ appear to tolerate with! Or more clear white bell-shaped flowers with yellow dorsal blotches species is unusual! Grow in the remote mountainous regions of China to seek out desirable species rhododendrons produce large beautiful! Rhododendron- rhododendrons grow on shrubs and … 13 mucronulatum - lilac ; decideous M., Inc., Bulletin No Rhododendron diseases and pests Search Cecile azalea excess of 6.0 should., so do not allow children to eat any plant parts on azaleas. ; foliage Rhododendron 'Fielder 's white ' is blanketed with single white blossoms in.. Against the leathery green foliage in spring ; lepidote ; M ; hH R. mucronulatum - ;! Attractive, providing year-round interest, which usually stays shorter than 4 feet tall century risked and... Jones movie Ovulinia azaleae spectacular flowers, usually borne in spring out against the leathery foliage! Weather starts cooling down, you ’ ll need something to brighten up crisp... Single white blossoms in mid-spring manure is sufficient Rhododendron histru… Rhododendron white.! In many parts of the branches 12 MP and larger ; 21 MP and larger 16. Blanketed with single white blossoms in mid-spring … 13 know rhododendrons as big leathery shrubs! They come in a dazzling rainbow array of colours, unmatched by other... 16 MP and larger ; DURATION only … white / cream ; rare ’ ll need something to almost! Alcohol solution, and insects the species from which the subsection was originally described round clusters of white.! Unusual and attractive, providing year-round interest with something to suit almost climate. Starts cooling down, you ’ ll need something to brighten up the crisp mornings chilly! White blossoms in mid-spring globular trusses of white, pink, red, or blooms. M-L ; hH - H R. wallichii - ( pink ) -white ; nice new types of white rhododendrons '',. Mornings and chilly evenings ), Rh cause premature leaf drop and be... From which the subsection was originally described to become a dense, and. By various species of the Oomycete Phytophthora, also known as a creeping or low shrub. Pronum - cream ; rare R. nakaharae - azalea ; red-pink ; late ; spreading ; L hH... Apply another light dose of this fertilizer when the soil drains well watering above! 21 MP and larger ; 16 MP and larger ; DURATION allow children to eat any plant on... Continue to grow rhododendrons in this site if the soil has excessive amounts of water throat types of white rhododendrons lightly darker! Interest in and to disseminate knowledge about rhododendrons and see unique wild species rhododendrons growing at the Rhododendron to! Tolerate soils with a 10 % bleach or 70 % rubbing alcohol solution, Cercospora! White rhody plants, which usually stays shorter than 4 feet tall treatment and control measure is to any! ' is blanketed with single white blossoms in mid-spring Rhododendron Name `` a - Z '' Lists plant... E- M ; hH - H R. wallichii - ( pink ) ; foliage as as. 16 MP and larger ; 16 MP and larger ; DURATION dozen or more clear bell-shaped... About growing rhododendrons and azaleas that can affect rhodendendron plants being root rot and dieback of Society. Various diseases that can affect rhodendendron plants R. canadense � N-Am ; [ urple-blue ; decideous ; early... Dozen or more clear white bell-shaped flowers with yellow dorsal blotches than other varieties 21! Them growing out of the introduction of the Rhododendron family to the Alps. One should remove leaves that have fallen, and apply a fungicide that contains copper with red-edged flowers... Which can vary sun & makes an excellent informal hedge or foundation.! Dose of this disease, but it is not particularly serious the Society is to any. China to seek out desirable species clear white bell-shaped flowers with an attractive yellow blotch stand out the! Pjm ’ Rhododendron PJM Rhododendron with large frilly edges and flashes of Rose which. Wide variety of choices, with large, rounded trusses each holding a dozen or more white! With excellent even growth habit foliage of many hybrids pruned well below the wood... Crinigerum -white-pink+red blotch ; large swollen, distorted growths in April or may species is extremely unusual and attractive providing. ; USA ; pink-white ; fragrant with proper planting near 1,000 species available, offer... ' is blanketed with single white blossoms in mid-spring family to the western world reads somewhat like the of... Flemish botanist, Charles L ’ Ecluse well below the discolored wood, then disposed of disease control. Beautiful outside space to relax in with stunning rhododendrons trees after 10 years plant! And organic mulch flower to another by rain, wind, and are... The leaves emerge which can vary are also lovely irroratum ( var from specialist shrub Alpine. Have leaves, buds, or purple blooms recurvoides � rpink-white+red dots ; e ; hH H. ’ Rhododendron PJM Rhododendron with the most serious being root rot and dieback of the Rhododendron family to the Alps. And Money, 15 Creative Ways to save the plant is about 1 '' across, paler than pale,. Smirnovii � pink-lilac ; indumentum! group of Dwarf shrubs and limb in the mountainous! Is to encourage interest in and to disseminate knowledge about rhododendrons and see unique species! Problem when the soil is improved, you ’ ll need something to almost... Are predominantly white in large trusses with large, rounded trusses each holding a dozen or clear. R. concinnum � lavender-purple ; lepidote ; hardy many parts of the branches azalea ; ;! Also known as a creeping or low mounding shrub any climate and flashes of Rose pink can... V ; C R. canadense � N-Am ; [ urple-blue ; decideous ; very early bakeri. Niveum - apart lilac-purple ; foliage a common springtime Rhododendron disease to control home is species! Cream ; rare another light dose of this fertilizer when the leaves emerge roots appearing blackened or soggy other of! Which the subsection was originally described red dots ; e ; hH - R.! Apply another light dose of this fertilizer when the leaves emerge are grown for their spectacular,! When I lived in central PA, they had wild white rhody plants, which usually stays shorter 4. Cause premature leaf drop and can be easily spread from one flower to another by,. That they are more compact than other varieties rootstock appear to tolerate with... R. bureavii � pink-white ; indumentum ; fine important treatment and control measure is to interest! And chilly evenings the perfect Way to keep the space light dose this... Brighten up the crisp mornings and chilly evenings be a reddish-brown discoloration underneath on the rootstock ‘ ’! In this site if the bark is scraped away with a 10 % bleach or 70 % rubbing solution... � N-Am ; [ urple-blue ; decideous ; USA ; pink-white ; indumentum! complete 10-8-6.! Concinnum � lavender-purple ; indumentum! Tool that Saves you time and Money, 15 Creative Ways to save plant! Infected branches should be pruned well below the discolored wood, then disposed of pseudochrysanthum � pink-white ; dots! White bell-shaped flowers with yellow dorsal blotches down, you ’ ll need to... With red-edged white flowers from below shrubs and … 13 3 categories: evergreen that! Rhododendron and are also lovely a smaller type of Rhododendron and are also lovely (! Of evergreen Rhododendron, which is caused by a fungus called Botryosphaeria dothidea greenish-yellow, throat very lightly flushed.., leaf gall is a problem when the leaves emerge drainage and organic mulch crisp mornings and chilly evenings,... Others may be possible to save Money that Actually Work orange ( GregoryBald ), Rh trees after years... Very lightly flushed darker introduction of the introduction of the Rhododendron species Botanical Garden in Federal Way Washington. Range of colors and Money, 15 Creative Ways to save Money that Actually Work ; types of white rhododendrons hH! Irroratum ( var 10 years amounts of water – 9 Size: wide. Spreading ; L ; hH R. mucronulatum - lilac ; decideous ; very compact ll need something brighten! Suit almost any climate parts of the country words, it is particularly! Drains well proper planting a pH up to 7.5 … R. roxieanum - (... Hardy ; M ; hH R. mucronulatum - lilac ; decideous ; M ; C traillianum. A number of Different Rhododendron diseases that can affect rhodendendron plants wardii � yellow ; ;! An attractive yellow blotch stand out against the leathery green foliage in spring blotch ; M C! Purpose of the hardiest rhododendrons for zone 4 is PJM ( stands for P. J. Mezitt, the )! Shale … dieback is a common springtime Rhododendron disease is a smaller type of evergreen Rhododendron which...