M; H; Pn!! M; C;
E-M; H; Pn!
plant(tree); M; H
R. taliense � cream-yellow-white; indumentum!! R. prunifolium � USA;
Devoted horticultural pioneers of the 19th century risked life and limb in the remote mountainous regions of China to seek out desirable species. pink-white; fragrant!
R. prinophyllum - pink(red)+ blotch;
indumentum; M; hH
HD. You can obtain most of them easily from specialist shrub and alpine nurseries. R. hanceanum - cream yellow; lepidote+low; M; C
Polka Dot) - white-cream-pink+dark dots!
USA; L; hH - H
M; hH - H
Greer)
Leaf gall is a common springtime Rhododendron disease, but it is not particularly serious. R. praestans - pink-white with red
R. indicum - azalea; (pink)red; varieties; L; C
R. roxieanum - white(pink); foliage! At this time, apply a complete 10-8-6 fertilizer. M; hH
; M; hH
R. hirsutum - from red to white; lepidote and heary; M-L; C
USA; L; hH - H
R. praestans - pink-white with red
blotch; large! large plant! E; hH - H
R. prunifolium � USA;
The purpose of the Society is to encourage interest in and to disseminate knowledge about rhododendrons and azaleas. R. keiskei
E - M; hH - H
R. impeditum � and derived varieties; blue\lilac; E-M; C
One of the hardiest rhododendrons for zone 4 is PJM (stands for P. J. Mezitt, the hybridizer). R. haematodes � bright red; indumentum; M; hH
R. baileyi - apart!!
M-L; hH
R. fastiagatum - lavender\blue; lepidote; M; C
M; H; Pn!! White Flowers for Fall. R.
R. caucasicum - cream-yellow-white; E - M; hH
yakushimanum x Rh. In 10 years the plant is about 1 foot tall. Rhododendron 'Fielder's White' is blanketed with single white blossoms in mid-spring. red; decideous; L; hH - H, R. occidentale � cream-pink-white; fragrant bdecideous, L; hH
protection!! Rhododendron 'Princess Anne' flowers are about 1" across, paler than pale greenish-yellow, throat very lightly flushed darker.
E; hH - H
lepidote; M-L; hH - H
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. rubiginosum - lavender-pink; lepidote; M; hH
R. irroratum (var. R. irroratum (var. R. globigerum - pink-white; indumentum! indumentum! R. floribundum - lavender-purple; indumentum! R. haematodes � bright red; indumentum; M; hH
R. hirsutum - from red to white; lepidote and heary; M-L; C
These are poisonous plants, so do not allow children to eat any plant parts on your azaleas or rhododendrons. 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. M; hH
M; hH
R. calophytum
R. schlippenbachii - pink-white; decideous; M; hH
M; H; Pn!! large plant! R. insigne � pink-white; silver underside leaves! R. hirsutum - from red to white; lepidote and heary; M-L; C
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. … M; C;
blackpurple!
E - M; hH - H
R. impeditum � and derived varieties; blue\lilac; E-M; C
R. gymnocarpum - darkred; indumentum; M; C - hH
Kurume azalea (Rhododendron x obtusum) is a smaller type of evergreen rhododendron, which usually stays shorter than 4 feet tall. M; hH
R. fulvum - (dark)pink; indumentum; E - M; hH - H
E; hH - H
small 'balls'; lepidote; M; C-hH
R. catawbiense - USA; lilac-purple-pink; L; hH - H
largeshrub\tree; E; H; Pn!! E; hH - H
ORIENTATION. R. insigne � pink-white; silver underside leaves! Also, avoid watering from above — and only water the plants from below. R. prunifolium � USA;
lepidote; M; hH - H
Nice!! R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
pink blotch; M; hH, R. smirnovii � pink-lilac; indumentum! foliage! pink-white; fragrant! R. keleticum - purple=red; lepidote; very compact; M; C, R. kiusianum - azalea; pink-purple; M; C
R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
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. Even resistant varieties will succumb under these conditions. R. irroratum (var.
decideous; M; hH - H
R. niveum - apart lilac-purple! R. keleticum - purple=red; lepidote; very compact; M; C, R. dauricum - pink-purple; lepidote; very early! 16 Species Each distinct type of wild rhododendron is called a species (a word which is the same in both singular and plural; to use the word "specie" for the singular is quite incorrect). R. wiltonii - pink-white; red dots;
decideous; M; hH
orange\red\lilac\pink; E-L; hH - H
R. viscosum � pink-white; fragrant! R. fargesii � pink(stripes); early;
R. hemsleyanum - white;large plant; M - L; H
R. schlippenbachii - pink-white; decideous; M; hH
E-M; H; Pn! It would help to have pictures of the various diseases that can affect rhodendendron plants. They may be cultivated or wild. 23.98 FPS. M; H; Pn!! fragrant; decideous; M; hH - H
R. rubiginosum - lavender-pink; lepidote; M; hH
R. indicum - azalea; (pink)red; varieties; L; C
lepidote; M; hH - H
R. orbiculare � pink; almost round leaves; E - M; hH
fragrant; decideous;
lepidote; M-L; hH - H
pink-white; fragrant! eximium - (light)pink; indumentum; M; H; Pn!! R. niveum - apart lilac-purple! R. auriculatum � white; fragrant; from July - September; L; H
red; decideous; L; hH - H, R. orbiculare � pink; almost round leaves; E - M; hH
R. auriculatum � white; fragrant; from July - September; L; H
large leaves; E; H
Other Rhododendrons for Cold Climates. R. wardii � yellow; parent of many hybrids! Disinfect pruning tools between cuts with a 10% bleach or 70% rubbing alcohol solution, and apply a fungicide that contains copper. M; hH - H
foliage! R. recurvoides � rpink-white+red dots; indumentum!
R. caucasicum - cream-yellow-white; E - M; hH
; M; hH
R. keleticum - purple=red; lepidote; very compact; M; C, R. haematodes � bright red; indumentum; M; hH
Assortment of
R. praestans - pink-white with red
decideous; USA; L; hH - H
R. schlippenbachii - pink-white; decideous; M; hH
R. yakushimanum � pink-white; indumentum;
R. hirsutum - from red to white; lepidote and heary; M-L; C
R. nakaharae - azalea; red-pink; late; spreading; L; C
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.
E; hH - H
R. davidsonianum - lilac(white);
R. pseudochrysanthum
L; H
The flowers are predominantly white in large trusses with large frilly edges and flashes of rose pink which can vary. M; C
R. macrophyllum; USA; lavender-pink-white; M; hH - H
Greer)
R. occidentale � cream-pink-white; fragrant bdecideous, L; hH
R. traillianum - pink-white; indumentum! R. wallichii - (pink)-white; nice
* Best Compact Rhododendron – ‘PJM’ Rhododendron PJM Rhododendron. R. insigne � pink-white; silver underside leaves! M; C
R. periclymenoides - USA;
R. pulloninii - apart! The types of Rhododendrons available can be broken down into 3 categories: evergreen shrubs, deciduous shrubs, and evergreen trees. R. concinnum � lavender-purple; lepidote; arom; E-M; hH
R. coriaceum - white+red blotch! The first sign of this disease is often a wilt, with the roots appearing blackened or soggy. blotch; large! foliage
M; C
RF and RM. E - M; hH - H
fine! new leaves! R. lanatum - pale-yellow; thick indumentum! R. hanceanum - cream yellow; lepidote+low; M; C
R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
R. micranthum �white in small trusses; lepidote; hardy! L; H
R. trichostomum - white-pink; in
R. yunnanense �light pink with
R. hanceanum - cream yellow; lepidote+low; M; C
Most people know rhododendrons as big leathery leafed shrubs with round clusters of white, pink, red, or purple blooms. In early spring, the rhododendron buds swell. fragrant; decideous;
M; C
foliage! � white-pink with dark blotch; early! R.
blotch; indumentum; fine! hardy; M; hH - H
R. gymnocarpum - darkred; indumentum; M; C - hH
R. viscosum � pink-white; fragrant! foliage; M; hH
R. yakushimanum � pink-white; indumentum;
Other diseases of Rhododendron include petal blight, leaf gall, and leaf spots. R. wallichii - (pink)-white; nice
Polka Dot) - white-cream-pink+dark dots!
R. periclymenoides - USA;
Polka Dot) - white-cream-pink+dark dots! E; hH
R. concinnum � lavender-purple; lepidote; arom; E-M; hH
blotch; indumentum; fine! foliage
IMAGE RESOLUTION. ; M; hH
new leaves! Rhododendron White Angel . protection!! R. flavorufum - white-pink; indumentum! R. micranthum �white in small trusses; lepidote; hardy!
Root and crown rot is the most serious of the Rhododendron diseases in many parts of the country.
indumentum; M; hH R. rubiginosum - lavender-pink; lepidote; M; hH R. schlippenbachii - pink-white; decideous; M; hH R. smirnovii – pink-lilac; indumentum! topics
R. irroratum (var.
fine!
Control mainly consists of picking off the galls and disposing of them. indumentum! M; hH - H
R. wiltonii - pink-white; red dots;
Polka Dot) - white-cream-pink+dark dots!
R. wiltonii - pink-white; red dots;
foliage!
R. preptum - white with red blotch! Tolerates full sun & makes an excellent informal hedge or foundation plant. The foliage of many species is extremely unusual and attractive, providing year-round interest.
An additional important treatment and control measure is to destroy any flowers that show signs of infection. And they come in a whole range of colors like this one with red-edged white flowers.
M; hH
Dieback is a difficult Rhododendron disease to control. M; C;
blotch; indumentum; fine! R. pachysanthum - white with dots; indumentum! R. yunnanense �light pink with
M; hH
Compact, dense form is wider than tall, with excellent even growth habit. yellow!!
M; C;
small 'balls'; lepidote; M; C-hH
R. quinquefolium - azalea; white; apart leaves; decideous; M; C
R. praestans - pink-white with red
foliage; M; hH
R. augustinii �
R. wiltonii - pink-white; red dots;
R. hemsleyanum - white;large plant; M - L; H
R. yakushimanum � pink-white; indumentum;
R. rex � white+dark blotch; large plant;
R. orbiculare � pink; almost round leaves; E - M; hH
fine! This disease is a problem when the soil has excessive amounts of water. R. fargesii � pink(stripes); early;
R. elegantulum � pink-white; indumentum; very early; E; hH
; M; hH
apart leaves; E; hH
R. fastiagatum - lavender\blue; lepidote; M; C
R.
dichroanthum �yellow-orange; calyx; M-L; C - hH (photo Harold
R. macrophyllum; USA; lavender-pink-white; M; hH - H
M-L; hH
R. impeditum � and derived varieties; blue\lilac; E-M; C
L; H
R. catawbiense - USA; lilac-purple-pink; L; hH - H
blue\green leaves; M; C
pink blotch; M; hH, R. yakushimanum � pink-white; indumentum;
M; C
SD. R. floribundum - lavender-purple; indumentum! R. wiltonii - pink-white; red dots;
R. indicum - azalea; (pink)red; varieties; L; C
decideous;
4K. Another common Rhododendron disease is petal blight, which is caused by the fungus Ovulinia azaleae. R. prinophyllum - pink(red)+ blotch;
R. pachysanthum - white with dots; indumentum! white(pink);
Rhododendrons produce large and beautiful flowers with a wide variety of colors. R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
R. insigne � pink-white; silver underside leaves! E; hH - H
foliage!
E-M; H; Pn! Consequently, the taxonomy has been historically complex. R. campylogynum - from cream to purple-red; compact!! rhododendron
R. roxieanum - white(pink); foliage! oreonastes new foliage, Rh. foliage! R. praestans - pink-white with red
decideous; USA; L; hH - H
Rights-managed. Dwarf rhododendrons come in a dazzling rainbow array of colours, unmatched by any other group of dwarf shrubs. decideous; USA; L; hH - H
R. wallichii - (pink)-white; nice
R. mucronulatum - lilac; decideous; very early! M; H; Pn!! cumberlandense (bakeri) golden-yellow (Gregory Bald), Rh. M; C
R. prunifolium � USA;
late!
R. keleticum - purple=red; lepidote; very compact; M; C, R. canadense � N-Am; [urple-blue; decideous; V; C; moist! R. concinnum � lavender-purple; lepidote; arom; E-M; hH
blotch; large! R. yunnanense �light pink with
R. wardii � yellow; parent of many hybrids! foliage; M; hH
This disease is first visible on seemingly healthy plants when dying branches appear. decideous; USA; L; hH - H
M; hH - H
R. fulvum - (dark)pink; indumentum; E - M; hH - H
small 'balls'; lepidote; M; C-hH
new leaves! R. flammeum - USA; orange-red;
R. mucronulatum - lilac; decideous; very early! lavender-purple-pink; indumentum; M; hH - H
M; hH; Pn!! M; hH - H
fragrant; M; H
blue\green leaves; M; C
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
� yellow; lepidote; (most)low compact; E; C
blue\green leaves; M; C
fragrant; decideous;
R. trichostomum - white-pink; in
R. floribundum - lavender-purple; indumentum! Rhodendrons grafted on the rootstock ‘Cunningham’s White’ appear to tolerate pH levels in excess of 6.0. R. canadense � N-Am; [urple-blue; decideous; V; C; moist! Polka Dot) - white-cream-pink+dark dots! foliage! R. taliense � cream-yellow-white; indumentum!!
M; hH
R. floribundum - lavender-purple; indumentum! R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
R. yunnanense �light pink with
E; hH
R. dauricum - pink-purple; lepidote; very early! R. williamsianum � pink; small round leaves; nice plant; M; C - hH
planecostatum (vireya rhododendron), Rh. R. nakaharae - azalea; red-pink; late; spreading; L; C
R. floribundum - lavender-purple; indumentum! M-L; hH
R. canescens - USA; pink-white;
indumentum! R. traillianum - pink-white; indumentum! R. carolinianum � USA; pink-white;
fragrant; decideous;
R. hemsleyanum - white;large plant; M - L; H
foliage; M; hH
M; C
R. occidentale � cream-pink-white; fragrant bdecideous, L; hH
E; hH
cumberlandense (Gregory Bald), Rh. R. decorum � pink-white; late! R. preptum - white with red blotch! calendulaceum in Yellow Mountains a, Rh. R. periclymenoides - USA;
small 'balls'; lepidote; M; C-hH
Some rhododendrons are low-growing, while others may be as tall as ornamental trees after 10 years. hardy; M; hH - H
R. hemsleyanum - white;large plant; M - L; H
FORMATS. R. yunnanense �light pink with
Square. blue\green leaves; M; C
M; hH - H
R. coriaceum - white+red blotch! plants affected by it … R. baileyi - apart!!
R. fargesii � pink(stripes); early;
M; hH
decideous; M; hH
R. nakaharae - azalea; red-pink; late; spreading; L; C
R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
R. wallichii - (pink)-white; nice
R. eclecteum - from yellow to pink; E - M; hH
R. rex � white+dark blotch; large plant;
No matter their purpose, you’ll be sure to find the perfect bloom for your occasion with our list of 40 types of white flowers! R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. carolinianum � USA; pink-white;
Rights-ready. R. decorum - white-pink; fragrant; large; late! R. bureavii � pink-white; indumentum! R. makinoi � pink-white; indumentum;
M; C;
One should remove leaves that have fallen, and take care when watering to keep the leaves dry.
lavender\blue\pink; lepidote; E-M; hH - H
R. keiskei
Leaf gall is a common springtime Rhododendron disease, but it is not particularly serious. tall and to 3-5' wide.
R. indicum - azalea; (pink)red; varieties; L; C
R. globigerum - pink-white; indumentum!
protection!! R. smirnovii � pink-lilac; indumentum! Dieback is a difficult Rhododendron disease to control. L; H
It can be easily spread from one flower to another by rain, wind, and insects. protection!! E - M; hH - H
This is caused by various species of the fungus Exobasidium. large
R. dauricum - pink-purple; lepidote; very early! R. micranthum �white in small trusses; lepidote; hardy!
R. pronum - cream; rare!
R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
R. impeditum � and derived varieties; blue\lilac; E-M; C
M; H; Pn!! R. pronum - cream; rare! R. preptum - white with red blotch! Learn about growing rhododendrons and see unique wild species rhododendrons growing at the Rhododendron Species Botanical Garden in Federal Way, Washington. Rhododendron Name "A - Z" Lists Rhododendron Plant Search M; hH
Species of Septoria, Colletotrichum, Phyllosticta, and Cercospora are responsible for this primarily cosmetic disease. large plant! R. yunnanense �light pink with
eximium - (light)pink; indumentum; M; H; Pn!! apart leaves; E; hH
fragrant; M; H
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
pink blotch; M; hH, R. viscosum � pink-white; fragrant!
lepidote; M-L; hH - H
Horizontal. R.
White / Cream; Alphabetical Name. R. wallichii - (pink)-white; nice
foliage! M; H; Pn!! R. brachycarpum - creame-whitet; coldhardy! Azaleas are a type of rhododendron and are also lovely. Some types are fragrant. R. yunnanense �light pink with
This manifests as spots on the flowers that cause them to rot. Wikibuy Review: A Free Tool That Saves You Time and Money, 15 Creative Ways to Save Money That Actually Work.
� yellow; lepidote; (most)low compact; E; C
The 7 species are: R. alabamense, R. arborescens, R. atlanticum, R. viscosum, R. eastmanii, R. colemanii and R. occidentale. decideous; M; hH - H
R. gymnocarpum - darkred; indumentum; M; C - hH
R. genesterianum - Apart! There are 7 varieties of azaleas in the ‘White Group’ that grow well in Europe and North America. R. fortunei � soft pink;
R. fastiagatum - lavender\blue; lepidote; M; C
R. williamsianum � pink; small round leaves; nice plant; M; C - hH
dark-purple;
Cecile azalea. pink-white in small trusses;
pink blotch; M; hH. R. prinophyllum - pink(red)+ blotch;
E - M; C
R. insigne � pink-white; silver underside leaves! Polka Dot) - white-cream-pink+dark dots! indumentum! Large! aganniphoides, Rh. R. keiskei
R. gymnocarpum - darkred; indumentum; M; C - hH
R. crinigerum -white-pink+red
� yellow; lepidote; (most)low compact; E; C
Large! blackpurple! R. genesterianum - Apart! R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
R. wiltonii - pink-white; red dots;
They were first discovered by a Flemish botanist, Charles l’Ecluse. R. keiskei
foliage! M; H; Pn!!
R. keleticum - purple=red; lepidote; very compact; M; C, R. fargesii � pink(stripes); early;
R. keiskei
… You can find it HERE. R. mucronulatum - lilac; decideous; very early! E; hH - H
Panoramic horizontal. dichroanthum �yellow-orange; calyx; M-L; C - hH (photo Harold
pink blotch; M; hH, R. lutescens � yellow; lepidote. Vertical. R. wallichii - (pink)-white; nice
R. pronum - cream; rare! M; H; Pn!! ... Beautiful globular trusses of white flowers with an attractive yellow blotch stand out against the leathery green foliage in spring. The hybrid rhododendron dichroanthum ssp. orange\red\lilac\pink; E-L; hH - H
R. wardii � yellow; parent of many hybrids! R. periclymenoides - USA;
other
R. fortunei � soft pink;
new leaves! R. cinnabarinum - many varieties!
M; hH
M; hH - H
This cultivar has been used subsequently to develop the Inkarho rootstock.
pink blotch; M; hH, R. taliense � cream-yellow-white; indumentum!!
R. flavorufum - white-pink; indumentum! R. flammeum - USA; orange-red;
R. trichostomum - white-pink; in
Infected branches should be pruned well below the discolored wood, then disposed of. Disinfect pruning tools between cuts with a 10% bleach or 70% rubbing alcohol solution, and apply a fungicide that contains copper.. roxieanum var. E; hH
R. decorum - white-pink; fragrant; large; late! R. yunnanense �light pink with
M; H; Pn!! R. irroratum (var. blackpurple! It may be possible to continue to grow Rhododendrons in this site if the soil is improved. R. viscosum � pink-white; fragrant! M; hH
R. racemosum -pink-white in small trusses;
E - M; hH - H
M; hH - H, R. callimorphum -
R. fulvum - (dark)pink; indumentum; E - M; hH - H
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