� yellow; lepidote; (most)low compact; E; C lepidote; M; hH - H E - M; C R. crinigerum -white-pink+red R. flammeum - USA; orange-red; pink blotch; M; hH, R. smirnovii � pink-lilac; indumentum! large foliage They may be cultivated or wild. R. praestans - pink-white with red M; H; Pn!! R. viscosum � pink-white; fragrant! R. prunifolium �  USA; calendulaceum in Yellow Mountains a, Rh. topics        R. keiskei Leaf spot is caused by a group of Rhododendron diseases that consists of various fungi. M; C red; decideous; L; hH - H, R. occidentale � cream-pink-white; fragrant bdecideous, L; hH fine! Leaf gall is a common springtime Rhododendron disease, but it is not particularly serious. R. orbiculare � pink; almost round leaves; E - M; hH R. eclecteum - from yellow to pink; E - M; hH R. genesterianum - Apart! E - M; hH - H Dwarf rhododendrons come in a dazzling rainbow array of colours, unmatched by any other group of dwarf shrubs. R. wiltonii - pink-white; red dots; hardy; M; hH - H All; 12 MP and larger; 16 MP and larger; 21 MP and larger; DURATION. R. praestans - pink-white with red R. brachycarpum - creame-whitet; coldhardy! Some types are fragrant. pink blotch; M; hH, R. yakushimanum � pink-white; indumentum; R. fastiagatum - lavender\blue; lepidote; M; C narrow leaves; M; C;  R. campylocarpum - cream yellow; M; hH - H R. canescens - USA; pink-white; pink-white; fragrant! small 'balls'; lepidote; M; C-hH M; hH eximium - (light)pink; indumentum; M; H; Pn!! M; C R. traillianum - pink-white; indumentum! M; C;  R. orbiculare � pink; almost round leaves; E - M; hH R. hirsutum - from red to white; lepidote and heary; M-L; C blotch; large! hardy; M; hH - H R. elegantulum � pink-white; indumentum; very early; E; hH R. wightii - cream-yellow; looks like R. lacteum; M; hH - H R. floribundum - lavender-purple; indumentum! lepidote; M-L; hH - H R. fargesii � pink(stripes); early; R. keleticum - purple=red; lepidote; very compact; M; C, R. kiusianum - azalea; pink-purple; M; C SD. R. schlippenbachii - pink-white; decideous; M; hH R. hemsleyanum - white;large plant; M - L; H R. canadense � N-Am; [urple-blue; decideous; V; C; moist! large; E; H foliage! foliage! R. brachycarpum - creame-whitet; coldhardy! 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. … R. R. decorum - white-pink; fragrant; large; late! eximium - (light)pink; indumentum; M; H; Pn!! decideous; M; hH - H These are poisonous plants, so do not allow children to eat any plant parts on your azaleas or rhododendrons. pink blotch; M; hH, R. wardii � yellow; parent of many hybrids! IMAGE RESOLUTION. HD. R. floribundum - lavender-purple; indumentum! M-L; hH � yellow; lepidote; (most)low compact; E; C foliage! hardy; M; hH - H R. yakushimanum � pink-white; indumentum; R. decorum � pink-white; late! blotch; indumentum; fine! R. R. caucasicum - cream-yellow-white; E - M; hH � yellow; lepidote; (most)low compact; E; C foliage! aganniphoides, Rh. R. niveum - apart lilac-purple! R. preptum - white with red blotch! R. wallichii - (pink)-white; nice R. globigerum - pink-white; indumentum! Rhododendron tsusiophyllum has small, white flowers that grows as a creeping or low mounding shrub. R. dauricum - pink-purple; lepidote; very early! M; hH - H E; hH decideous; USA; L; hH - H R. crinigerum -white-pink+red R. macrophyllum; USA; lavender-pink-white; M; hH - H Free Newsletter. R. smirnovii � pink-lilac; indumentum! R. yakushimanum � pink-white; indumentum; R. keleticum - purple=red; lepidote; very compact; M; C, R. canadense � N-Am; [urple-blue; decideous; V; C; moist! R. baileyi - apart!! Polka Dot) - white-cream-pink+dark dots! Square. E - M; hH - H R. baileyi - apart!! R. canescens - USA; pink-white; An additional important treatment and control measure is to destroy any flowers that show signs of infection. The ‘PJM’ Rhododendron is a compact variety that is also quite easy to grow and does better in full sun that most Rhododendrons. E; hH R. rubiginosum - lavender-pink; lepidote; M; hH fragrant; M; H R. pronum - cream; rare! R. floribundum - lavender-purple; indumentum! R. bureavii � pink-white; indumentum! R. pronum - cream; rare! Infected branches should be pruned well below the discolored wood, then disposed of. R. elegantulum � pink-white; indumentum; very early; E; hH R. impeditum � and derived varieties; blue\lilac; E-M; C R. pachysanthum - white with dots; indumentum! Tolerates full sun & makes an excellent informal hedge or foundation plant. 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. other R. niveum - apart lilac-purple! R. yunnanense �light  pink with R. smirnovii � pink-lilac; indumentum! R. canadense � N-Am; [urple-blue; decideous; V; C; moist! E; hH - H blackpurple! ... close-up of white rhododendron flowers - rhododendron stock pictures, royalty-free photos & … At this time, apply a complete 10-8-6 fertilizer. R. nakaharae - azalea; red-pink; late; spreading; L; C R. rex � white+dark blotch; large plant; large R. wightii - cream-yellow; looks like R. lacteum; M; hH - H R. taliense � cream-yellow-white; indumentum!! Azaleas are a type of rhododendron and are also lovely. decideous; USA; L; hH - H M; hH - H, R. callimorphum - R. nakaharae - azalea; red-pink; late; spreading; L; C M; C;  protection!! M; C;  lavender\blue\pink; lepidote; E-M; hH - H Sometimes infected leaves become covered with white spots. E - M; hH - H In autumn, applying organic compost or manure is sufficient. � pink-white; red dots; E; hH. M; H; Pn!! indumentum; M; hH � white-pink with dark blotch; early! decideous; M; hH - H R. keiskei Most species bear "trusses" of up to 24 spectacular blooms, in colours ranging from white to pink, red, yellow, and mauve. There are a number of different Rhododendron diseases, with the most serious being root rot and dieback of the branches. M; C;  � white-pink with dark blotch; early! M; hH R. mucronulatum - lilac; decideous; very early! R. hirsutum - from red to white; lepidote and heary; M-L; C fine! R. baileyi - apart!! R. schlippenbachii - pink-white; decideous; M; hH R. traillianum - pink-white; indumentum! R. trichostomum - white-pink; in R. gymnocarpum - darkred; indumentum; M; C - hH E; hH R. mucronulatum - lilac; decideous; very early! R. wightii - cream-yellow; looks like R. lacteum; M; hH - H R. crinigerum -white-pink+red The white flowered plants are called a variety of the regular type, and the full name is then written: " R. … R. gymnocarpum - darkred; indumentum; M; C - hH indumentum! M; C � yellow; lepidote; (most)low compact; E; C R. schlippenbachii - pink-white; decideous; M; hH R. globigerum - pink-white; indumentum! USA; L; hH - H R. wallichii - (pink)-white; nice M; hH; Pn!! It may be possible to continue to grow Rhododendrons in this site if the soil is improved. rhododendron M; C large plant! M; H; Pn!! blotch; large! R. campylogynum - from cream to purple-red; compact!! R. hanceanum - cream yellow; lepidote+low; M; C Nice!! R. prunifolium �  USA; E; hH - H With near 1,000 species available, Rhododendrons offer a wide variety of choices, with something to suit almost any climate. large plant! large leaves; E; H It can be easily spread from one flower to another by rain, wind, and insects. R. indicum - azalea; (pink)red; varieties; L; C It is also important that the soil drains well. R. caucasicum - cream-yellow-white; E - M; hH pink-white; fragrant! E; hH � yellow; lepidote; (most)low compact; E; C R. pachytrichum � pink-white; indumentum! blotch; large! foliage; M; hH R. haematodes � bright red; indumentum; M; hH Species of Septoria, Colletotrichum, Phyllosticta, and Cercospora are responsible for this primarily cosmetic disease. One of the hardiest rhododendrons for zone 4 is PJM (stands for P. J. Mezitt, the hybridizer). Wikibuy Review: A Free Tool That Saves You Time and Money, 15 Creative Ways to Save Money That Actually Work. This manifests as spots on the flowers that cause them to rot. foliage; M; hH ; M; hH R. globigerum - pink-white; indumentum! R. praestans - pink-white with red R. pulloninii - apart! small 'balls'; lepidote; M; C-hH This disease is first visible on seemingly healthy plants when dying branches appear. decideous; M; hH - H Their flowers are very showy, with large pink buds and white flowers. decideous; USA; L; hH - H decideous; M; hH L; H R. cinnabarinum - many varieties! Rhododendron 'Cecile' grows vigorously to become a dense, 7-foot-tall and 7-foot-wide shrub with trusses... 'Fielder's White' azalea. R. yunnanense �light  pink with As treated in Dr. Cullen’s 1980 revision of the subsection, R. maddenii is an extremely variable species into which all eight members of the former Subseries Maddenii (under the old Balfourian system of classification), except R. excellens, have been lumped. decideous; M; hH Some rhododendrons are low-growing, while others may be as tall as ornamental trees after 10 years. Rhododendron maddenii is the type species for this subsection. pink-white; fragrant! R. bureavii � pink-white; indumentum! Infected branches should be pruned well below the discolored wood, then disposed of. Leaf gall is a common springtime Rhododendron disease, but it is not particularly serious. R. irroratum (var. R. haematodes � bright red; indumentum; M; hH Rhododendron 'Fielder's White' is blanketed with single white blossoms in mid-spring. fine! R. micranthum �white in small trusses; lepidote; hardy! R. rex � white+dark blotch; large plant; lavender-purple-pink;  indumentum; M; hH - H blackpurple! R. traillianum - pink-white; indumentum! R. williamsianum � pink; small round leaves; nice plant; M; C - hH fragrant; decideous; ORIENTATION. Devoted horticultural pioneers of the 19th century risked life and limb in the remote mountainous regions of China to seek out desirable species. red; decideous; L; hH - H, R. prinophyllum - pink(red)+ blotch; You can choose between various types of fertilizer for your plants. Measure the height of your rhododendron shrub. R. irroratum (var. R. irroratum (var. White Flowers for Fall. I recall them growing out of the shale … plant(tree); M; H fragrant; decideous; R. wightii - cream-yellow; looks like R. lacteum; M; hH - H plants affected by it have leaves, buds, or stems that develop swollen, distorted growths in April or May. R. davidsonianum - lilac(white); foliage! R. pachytrichum � pink-white; indumentum! blotch; large! R. ferrugineum - pink(to white); lepidote; European Alps; M - L; C They may be cultivated or wild. M; hH M; hH; Pn!! R. pronum - cream; rare! R. hemsleyanum - white;large plant; M - L; H R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH It is caused by various species of the Oomycete Phytophthora, also known as a water mold. R. pachysanthum - white with dots; indumentum! red; decideous; L; hH - H, R. maximum � pink(white); cold hardy! cinnabarinum f blandfordiiflorum, Rh. pink-white; fragrant! R. auriculatum � white; fragrant; from July - September; L; H decideous; M; hH - H R. wiltonii - pink-white; red dots; R. occidentale � cream-pink-white; fragrant bdecideous, L; hH indumentum! eximium - (light)pink; indumentum; M; H; Pn!! R. eclecteum - from yellow to pink; E - M; hH indumentum; M; hH R. wiltonii - pink-white; red dots; fragrant; decideous; M; hH - H narrow leaves; M; C;  M; hH - H, R. augustinii � In 10 years the plant is about 1 foot tall. RF and RM. large leaves; E; H R. flammeum - USA; orange-red; R. wardii � yellow; parent of many hybrids! Nice!! R. nakaharae - azalea; red-pink; late; spreading; L; C ... Rhododendron- Rhododendrons grow on shrubs and … protection!! R. luteum - yellow; fragrant! R. xanthocodon - light yellow; lepidote; bluish leaves; M; hH foliage R. micranthum �white in small trusses; lepidote; hardy! large M; hH Control mainly consists of picking off the galls and disposing of them. R. R. haematodes � bright red; indumentum; M; hH M; hH M; H; Pn!! USA; L; hH - H

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