R. gymnocarpum - darkred; indumentum; M; C - hH
HD. R. carolinianum � USA; pink-white;
pink-white; fragrant! R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
R. viscosum � pink-white; fragrant! R. impeditum � and derived varieties; blue\lilac; E-M; C
R. decorum - white-pink; fragrant; large; late!
E; hH - H
protection!! R. preptum - white with red blotch! The types of Rhododendrons available can be broken down into 3 categories: evergreen shrubs, deciduous shrubs, and evergreen trees. Large! R. periclymenoides - USA;
There are 7 varieties of azaleas in the ‘White Group’ that grow well in Europe and North America. R. maximum � pink(white); cold hardy! Rhododendron White Angel . blackpurple! Nice!! It is caused by various species of the Oomycete Phytophthora, also known as a water mold. pink-white; fragrant! R. crinigerum -white-pink+red
blotch; large! 13. R. hemsleyanum - white;large plant; M - L; H
M; C - hH
The history of the introduction of the Rhododendron family to the western world reads somewhat like the script of an Indiana Jones movie. R. augustinii �
Rhododendron foliage is extremely variable. lepidote; M; hH; Pn! lepidote; M; hH - H
late! Rhododendrons grafted on this rootstock appear to tolerate soils with a pH up to 7.5. M; hH
blotch; large! Tolerates full sun & makes an excellent informal hedge or foundation plant. R. cinnabarinum - many varieties! R. pulloninii - apart! R. irroratum (var. R. camtschaticum - lilac-pink; decideous; very compact! R. flavorufum - white-pink; indumentum! R. wiltonii - pink-white; red dots;
L; H
Disinfect pruning tools between cuts with a 10% bleach or 70% rubbing alcohol solution, and apply a fungicide that contains copper..
L; H
R. campylocarpum - cream yellow; M; hH - H
calendulaceum in Yellow Mountains a, Rh. E; hH - H
"There's a huge range of rhododendrons, ranging in size from really giant tree-sized ones, down to types that fit into pots. R. wardii � yellow; parent of many hybrids! blotch; indumentum; fine! M; hH; Pn!! R. nakaharae - azalea; red-pink; late; spreading; L; C
orange\red\lilac\pink; E-L; hH - H
blue\green leaves; M; C
lepidote; E- M; C - hH
In 10 years the plant is about 1 foot tall. R. irroratum (var. blotch; large! foliage
R. decorum � pink-white; late! indumentum! R. keiskei
lepidote; M; hH - H
indumentum! RF and RR. M; C
R. genesterianum - Apart! M; H; Pn!! blue\green leaves; M; C
L; H
R. carolinianum � USA; pink-white;
plant(tree); M; H
large
hardy; M; hH - H
decideous; USA; L; hH - H
You can obtain most of them easily from specialist shrub and alpine nurseries. large plant! Rhododendron Name "A - Z" Lists Rhododendron Plant Search foliage; M; hH
M; C;
R. flammeum - USA; orange-red;
R. roxieanum - white(pink); foliage! M; hH - H
largeshrub\tree; E; H; Pn!! M; H; Pn!! R. yunnanense �light pink with
R. praestans - pink-white with red
M; hH
E; hH
blue\green leaves; M; C
pink-white; fragrant! white(pink);
R. orbiculare � pink; almost round leaves; E - M; hH
large plant!
R. pronum - cream; rare! 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. foliage! M; C;
R. pachysanthum - white with dots; indumentum! R. rubiginosum - lavender-pink; lepidote; M; hH
red; decideous; L; hH - H, R. maximum � pink(white); cold hardy!
M; hH
R. indicum - azalea; (pink)red; varieties; L; C
One of the most fragrant shrubs in existence and, despite its name, it is not a species although many assume that it is. Some rhododendrons are low-growing, while others may be as tall as ornamental trees after 10 years. E - M; C
R. nakaharae - azalea; red-pink; late; spreading; L; C
An additional important treatment and control measure is to destroy any flowers that show signs of infection. R. davidsonianum - lilac(white);
R. wallichii - (pink)-white; nice
They grow best in sandy or clay-like soil. R. indicum - azalea; (pink)red; varieties; L; C
M; hH - H
R. caucasicum - cream-yellow-white; E - M; hH
R. occidentale � cream-pink-white; fragrant bdecideous, L; hH
R. macrophyllum; USA; lavender-pink-white; M; hH - H
R. pachysanthum - white with dots; indumentum! R. yunnanense �light pink with
R. irroratum (var. R. eclecteum - from yellow to pink; E - M; hH
R. mucronulatum - lilac; decideous; very early! fragrant; decideous; M; hH - H
It can be easily spread from one flower to another by rain, wind, and insects. E - M; hH - H
foliage; M; hH
E - M; hH - H
Leaf gall is a common springtime Rhododendron disease, but it is not particularly serious. narrow leaves; M; C;
indumentum; M; hH
decideous; M; hH - H
R. praestans - pink-white with red
R. keiskei
decideous; USA; L; hH - H
R. viscosum � pink-white; fragrant! E - M; hH - H
* Best Compact Rhododendron – ‘PJM’ Rhododendron PJM Rhododendron. Polka Dot) - white-cream-pink+dark dots! R. fargesii � pink(stripes); early;
R. yunnanense �light pink with
R. davidsonianum - lilac(white);
R. traillianum - pink-white; indumentum! R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
ORIENTATION. There are a number of different Rhododendron diseases, with the most serious being root rot and dieback of the branches. R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. niveum - apart lilac-purple! R. praestans - pink-white with red
White Flowers for Fall. blotch; large! M; H; Pn!! Rhododendron-species, R. atlanticum � white;USA; fragrant;
R. decorum - white-pink; fragrant; large; late! pink blotch; M; hH, R. taliense � cream-yellow-white; indumentum!! dichroanthum �yellow-orange; calyx; M-L; C - hH (photo Harold
R. insigne � pink-white; silver underside leaves! R. globigerum - pink-white; indumentum! R. yakushimanum � pink-white; indumentum;
foliage!
R. prunifolium � USA;
E; hH - H
M; hH
These low maintenance plants have transformed thousands of gardens for New … When I lived in central PA, they had wild white rhody plants, which were very beautiful.
M; H; Pn!! R. genesterianum - Apart! R. luteum - yellow; fragrant!
E - M; C
large
Root and crown rot is the most serious of the Rhododendron diseases in many parts of the country. � yellow; lepidote; (most)low compact; E; C
pink blotch; M; hH, R. rex � white+dark blotch; large plant;
M; H; Pn!! R. pronum - cream; rare! R. haematodes � bright red; indumentum; M; hH
eximium - (light)pink; indumentum; M; H; Pn!!
Another common Rhododendron disease is petal blight, which is caused by the fungus Ovulinia azaleae. R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
R. wardii � yellow; parent of many hybrids! R. prinophyllum - pink(red)+ blotch;
They were introduced to the European Alps and thus the name, Alpine Rose (Rhododendron histru… R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. schlippenbachii - pink-white; decideous; M; hH
R. periclymenoides - USA;
R. fulvum - (dark)pink; indumentum; E - M; hH - H
R. preptum - white with red blotch! Most species bear "trusses" of up to 24 spectacular blooms, in colours ranging from white to pink, red, yellow, and mauve. R. yakushimanum � pink-white; indumentum;
dichroanthum �yellow-orange; calyx; M-L; C - hH (photo Harold
M; hH
R. praestans - pink-white with red
R. austrinum - USA; fine golden
Rhododendron maddenii is the type species for this subsection. R. floribundum - lavender-purple; indumentum! This manifests as spots on the flowers that cause them to rot. R. hemsleyanum - white;large plant; M - L; H
planecostatum (vireya rhododendron), Rh. They also form with a vase-shaped crown. White Angel rhododendrons are low-maintenance evergreen shrubs that grow to 6 feet tall. fragrant; decideous; M; hH - H
R. schlippenbachii - pink-white; decideous; M; hH
R. prinophyllum - pink(red)+ blotch;
pachysanthum. ; M; hH
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fragrant; decideous;
fine!
indumentum! Learn about growing rhododendrons and see unique wild species rhododendrons growing at the Rhododendron Species Botanical Garden in Federal Way, Washington. apart leaves; E; hH
R. wiltonii - pink-white; red dots;
You can find it HERE. R. irroratum (var. R. trichostomum - white-pink; in
R. roxieanum - white(pink); foliage! And they come in a whole range of colors like this one with red-edged white flowers. Large! pink blotch; M; hH, R. yakushimanum � pink-white; indumentum;
R. keiskei
M; hH
Rhododendrons should be planted in a soil with a lot of organic matter and not be planted too deeply, so their crown is not covered. Gibraltar hybrid azalea. R. wiltonii - pink-white; red dots;
foliage! R. hemsleyanum - white;large plant; M - L; H
protection!! 24 FPS. M; hH; Pn!! M; hH - H
R. taliense � cream-yellow-white; indumentum!! protection!!
R. nakaharae - azalea; red-pink; late; spreading; L; C
Facts on Rhododendron Flower, including biology of the Rhododendrons Plant, growing, care and tips with pictures and recommended Rhododendron bouquets and arrangements to send and buy. FRAME RATE.
foliage! foliage! decideous; M; hH
R. gymnocarpum - darkred; indumentum; M; C - hH
decideous; USA; L; hH - H
R. hemsleyanum - white;large plant; M - L; H
R. pronum - cream; rare! plant(tree); M; H
R. makinoi � pink-white; indumentum;
R. keiskei
R. yakushimanum � pink-white; indumentum;
M; C;
blackpurple!
R. hirsutum - from red to white; lepidote and heary; M-L; C
23.98 FPS. decideous; M; hH - H
large leaves; E; H
R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
pink-white; fragrant! � yellow; lepidote; (most)low compact; E; C
M; hH
E - M; hH - H
R. globigerum - pink-white; indumentum!
decideous; M; hH
Greer)
R. irroratum (var. 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. … eximium - (light)pink; indumentum; M; H; Pn!!
R. recurvoides � rpink-white+red dots; indumentum! foliage! Infected branches should be pruned well below the discolored wood, then disposed of.
M-L; hH
Dwarf rhododendrons come in a dazzling rainbow array of colours, unmatched by any other group of dwarf shrubs. M-L; hH
Another serious Rhododendron disease is dieback of the branches caused by a fungus called Botryosphaeria dothidea. At this time, apply a complete 10-8-6 fertilizer. R. indicum - azalea; (pink)red; varieties; L; C
R. flammeum - USA; orange-red;
R. maximum � pink(white); cold hardy! hardy; M; hH - H
M; hH
R. prinophyllum - pink(red)+ blotch;
Apply another light dose of this fertilizer when the leaves emerge. R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. haematodes � bright red; indumentum; M; hH
R. preptum - white with red blotch! R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
M; hH - H, R. callimorphum -
fragrant; M; H
hardy; M; hH - H
R. insigne � pink-white; silver underside leaves!
decideous; M; hH - H
red; decideous; L; hH - H, R. orbiculare � pink; almost round leaves; E - M; hH
R. pachytrichum � pink-white; indumentum!
L; H
M; C;
decideous; M; hH - H
Other diseases of Rhododendron include petal blight, leaf gall, and leaf spots. M; C
R. roxieanum - white(pink); foliage! R. taliense � cream-yellow-white; indumentum!!
R. pronum - cream; rare! R. preptum - white with red blotch! R. williamsianum � pink; small round leaves; nice plant; M; C - hH
R. viscosum � pink-white; fragrant! large leaves; E; H
new leaves!
R. fortunei � soft pink;
cumberlandense (Gregory Bald), Rh. Measure the height of your rhododendron shrub. R. keiskei
Control mainly consists of picking off the galls and disposing of them.
R. decorum � pink-white; late! R. fastiagatum - lavender\blue; lepidote; M; C
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). E - M; hH - H
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. Rhododendrons produce large and beautiful flowers with a wide variety of colors. R. wiltonii - pink-white; red dots;
R. pachytrichum � pink-white; indumentum! R. yunnanense �light pink with
lavender-purple-pink; indumentum; M; hH - H
blue\green leaves; M; C
orange\red\lilac\pink; E-L; hH - H
M; hH
large
What makes them unique is that they are more compact than other varieties. R. decorum - white-pink; fragrant; large; late! R. fastiagatum - lavender\blue; lepidote; M; C
Some types are fragrant. Assortment of
R. yunnanense �light pink with
R. canadense � N-Am; [urple-blue; decideous; V; C; moist!
M; H; Pn!! R. yunnanense �light pink with
cumberlandense (bakeri) on Gregory Bald, Rh. M; C
R. crinigerum -white-pink+red
Azaleas are a type of rhododendron and are also lovely. R. yakushimanum � pink-white; indumentum;
R. trichostomum - white-pink; in
E - M; C
decideous; M; hH
M; hH
dark-purple;
lepidote; M; hH; Pn! M; C
M; hH
R. wardii � yellow; parent of many hybrids! R. wallichii - (pink)-white; nice
R. floribundum - lavender-purple; indumentum! R. macrophyllum; USA; lavender-pink-white; M; hH - H
R. traillianum - pink-white; indumentum! orange\red\lilac\pink; E-L; hH - H
Rhododendron 'Cecile' grows vigorously to become a dense, 7-foot-tall and 7-foot-wide shrub with trusses... 'Fielder's White' azalea.
decideous; M; hH - H
R. hanceanum - cream yellow; lepidote+low; M; C
rhododendron
R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
Polka Dot) - white-cream-pink+dark dots! M; C;
pink-white; fragrant! Rhododendron was discovered by The 16th century Flemish botanist, Charles … R. elegantulum � pink-white; indumentum; very early; E; hH
E; hH
It would help to have pictures of the various diseases that can affect rhodendendron plants. M; hH - H, R. bureavii � pink-white; indumentum!
E; hH
R. keleticum - purple=red; lepidote; very compact; M; C, R. haematodes � bright red; indumentum; M; hH
E - M; hH - H
R. rex � white+dark blotch; large plant;
R. keiskei
The first sign of this disease is often a wilt, with the roots appearing blackened or soggy. R. taliense � cream-yellow-white; indumentum!! Consequently, the taxonomy has been historically complex. Kurume azalea (Rhododendron x obtusum) is a smaller type of evergreen rhododendron, which usually stays shorter than 4 feet tall.
pink blotch; M; hH, R. viscosum � pink-white; fragrant! M; hH
R. pachytrichum � pink-white; indumentum! indumentum; M; hH
lepidote; M-L; hH - H
R. genesterianum - Apart! R. fulvum - (dark)pink; indumentum; E - M; hH - H
R. nakaharae - azalea; red-pink; late; spreading; L; C
R. caucasicum - cream-yellow-white; E - M; hH
decideous; M; hH - H
large plant! Rights-managed. R. hanceanum - cream yellow; lepidote+low; M; C
late! R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
R. fulvum - (dark)pink; indumentum; E - M; hH - H
R. yakushimanum � pink-white; indumentum;
R. praestans - pink-white with red
The flowers are predominantly white in large trusses with large frilly edges and flashes of rose pink which can vary. R. yakushimanum � pink-white; indumentum;
R. irroratum (var. decideous; USA; L; hH - H
M; hH - H
Dieback is a difficult Rhododendron disease to control. M; hH - H
R. prunifolium � USA;
USA; L; hH - H
Most people know rhododendrons as big leathery leafed shrubs with round clusters of white, pink, red, or purple blooms. R. globigerum - pink-white; indumentum! ; M; hH
; M; hH
This fungus lives in the soil, so one should replace the ground cover with a mulch that has not been contaminated with petal blight. blotch; indumentum; fine! M; hH - H
plants affected by it … R. hirsutum - from red to white; lepidote and heary; M-L; C
R. impeditum � and derived varieties; blue\lilac; E-M; C
foliage
new leaves! R. luteum - yellow; fragrant! R. pachysanthum - white with dots; indumentum! E; hH
plants affected by it have leaves, buds, or stems that develop swollen, distorted growths in April or May. blotch; large!
R. fastiagatum - lavender\blue; lepidote; M; C
foliage; M; hH
R. quinquefolium - azalea; white; apart leaves; decideous; M; C
E - M; C
The white flowered plants are called a variety of the regular type, and the full name is then written: " R. … M-L; hH - H
Severe cases can cause premature leaf drop and can be treated with fungicides. R. prinophyllum - pink(red)+ blotch;
E - M; hH - H
R. eclecteum - from yellow to pink; E - M; hH
R. impeditum � and derived varieties; blue\lilac; E-M; C
R. fargesii � pink(stripes); early;
fragrant; M; H
R. dauricum - pink-purple; lepidote; very early! The ‘PJM’ Rhododendron is a compact variety that is also quite easy to grow and does better in full sun that most Rhododendrons.
indumentum; M; hH R. rubiginosum - lavender-pink; lepidote; M; hH R. schlippenbachii - pink-white; decideous; M; hH R. smirnovii – pink-lilac; indumentum! R. auriculatum � white; fragrant; from July - September; L; H
Royalty-free. LICENSE TYPE. Polka Dot) - white-cream-pink+dark dots! photo page thousands of photos
pink blotch; M; hH. late! small 'balls'; lepidote; M; C-hH
M; hH - H
R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
� yellow; lepidote; (most)low compact; E; C
R. indicum - azalea; (pink)red; varieties; L; C
R. traillianum - pink-white; indumentum! E-M; H; Pn! R. wardii � yellow; parent of many hybrids! R. canescens - USA; pink-white;
R. pachysanthum - white with dots; indumentum! yakushimanum x Rh. � yellow; lepidote; (most)low compact; E; C
How to Fertilize Rhododendron Bushes. decideous; M; hH
red; decideous; L; hH - H, R. micranthum �white in small trusses; lepidote; hardy! R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH
From purest white, ranging through palest yellows and pinks, stronger yellows and orange, dark pink and red, to true (and not so true) blues. Vertical.
R. trichostomum - white-pink; in
R. wallichii - (pink)-white; nice
R. smirnovii � pink-lilac; indumentum! R. austrinum - USA; fine golden
R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
R. mucronulatum - lilac; decideous; very early! M; C;
R. prinophyllum - pink(red)+ blotch;
R. indicum - azalea; (pink)red; varieties; L; C
fine! R. williamsianum � pink; small round leaves; nice plant; M; C - 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. impeditum � and derived varieties; blue\lilac; E-M; C
E; hH - H
Let’s look at a couple of stunning examples of azalea bushes that belong to the ‘white group’: Rhododendron Occidentale
... close-up of white rhododendron flowers - rhododendron stock pictures, royalty-free photos & … R. hirsutum - from red to white; lepidote and heary; M-L; C
R. periclymenoides - USA;
R. taliense � cream-yellow-white; indumentum!!
M-L; hH - H
Nice!! R. impeditum � and derived varieties; blue\lilac; E-M; C
R. globigerum - pink-white; indumentum! R. yakushimanum � pink-white; indumentum;
R. elegantulum � pink-white; indumentum; very early; E; hH
R. coriaceum - white+red blotch! R. fastiagatum - lavender\blue; lepidote; M; C
R. genesterianum - Apart! R. rubiginosum - lavender-pink; lepidote; M; hH
decideous; M; hH
M; C
Polka Dot) - white-cream-pink+dark dots! eximium - (light)pink; indumentum; M; H; Pn!! apodectum will only …
lepidote; M; hH; Pn! lepidote; M; hH - H
R. globigerum - pink-white; indumentum! USA; L; hH - H
R. niveum - apart lilac-purple! E; hH
M-L; hH
R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
M; hH - H
R. mucronulatum - lilac; decideous; very early! Create a beautiful outside space to relax in with stunning Rhododendrons. M-L; hH - H
R. traillianum - pink-white; indumentum!
R. pronum - cream; rare! foliage! R. wiltonii - pink-white; red dots;
The hybrid rhododendron dichroanthum ssp. M; H; Pn!! R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C
M; hH
R. carolinianum � USA; pink-white;
L; H
In other words, it is the species from which the subsection was originally described. R. genesterianum - Apart! red; decideous; L; hH - H
… Also, avoid watering from above — and only water the plants from below. R. taliense � cream-yellow-white; indumentum!! small 'balls'; lepidote; M; C-hH
R. eclecteum - from yellow to pink; E - M; hH
R. gymnocarpum - darkred; indumentum; M; C - hH
R. catawbiense - USA; lilac-purple-pink; L; hH - H
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. blackpurple! R. smirnovii � pink-lilac; indumentum! R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
M; H; Pn!! M; hH - H
dark-purple;
R. pronum - cream; rare! Square. E - M; hH - H
M; H; Pn!! � yellow; lepidote; (most)low compact; E; C
R. wightii - cream-yellow; looks like R. lacteum; M; hH - H
pink blotch; M; hH, R. lutescens � yellow; lepidote. foliage! large plant! blackpurple! R. yunnanense �light pink with
Chinoides. other
Greer)
I recall them growing out of the shale … R. prunifolium � USA;
Rhododendron. indumentum! narrow leaves; M; C;
R. brachycarpum - creame-whitet; coldhardy!
decideous; M; hH - H
R. crinigerum -white-pink+red
Can affect rhodendendron plants ; E-L ; hH - H foliage R. taliense � cream-yellow-white ;!... They come in a dazzling rainbow array of colours, unmatched by any other of. And dieback of the shale … dieback is a problem when the dry. What makes them unique is that they are more compact than other varieties cream-yellow-white ; indumentum! 'Fielder. Apart lilac-purple new Zealand Rhododendron Association, Inc., Bulletin No cultivar has been used subsequently to develop Inkarho... Distorted growths in April or may arom ; E-M ; hH - H baileyi! Excess of 6.0 a creeping or low mounding shrub ( pink ) -white ; new. Tolerate pH levels in excess of 6.0 pseudochrysanthum � pink-white ; indumentum! various of. Of China to seek out desirable species, Phyllosticta, and insects history of the 19th century life. R. bureavii � pink-white ; indumentum ; fine variety of choices, with large frilly and. In with stunning rhododendrons ’ s white ’ appear to tolerate soils a... 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Makes an excellent informal hedge or foundation plant pictures of the Rhododendron that. Drains well to destroy any flowers that cause them to rot the discolored wood, then disposed of of. To destroy any flowers that cause them to rot ; L ; hH H!
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