Rhododendron
(Azalea)

Identity

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Preferred Scientific Name

• Rhododendron L.

Preferred Common Name

• Azalea

Local Common Names

• Germany: Almrausch; Alpenrose; Azalee

EPPO code

• RHOSS (Rhododendron sp.)

Taxonomic Tree

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• Domain: Eukaryota
•     Kingdom: Plantae
•         Phylum: Spermatophyta
•             Subphylum: Angiospermae
•                 Class: Dicotyledonae
•                     Order: Ericales
•                         Family: Ericaceae
•                             Genus: Rhododendron

List of Pests

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Major host of:

Cacoecimorpha pronubana (carnation tortrix); Chrysomyxa rhododendri (European Rhododendron rust); Earias roseifera; Frankliniella occidentalis (western flower thrips); Homona magnanima (oriental tea tortrix); Phytophthora cactorum (apple collar rot); Phytophthora hedraiandra; Pseudococcus calceolariae (scarlet mealybug); Pseudomonas syringae pv. syringae (bacterial canker or blast (stone and pome fruits)); Rhizobium radiobacter (crown gall); Rhizobium rhizogenes (gall); Rhizoecus hibisci (root mealybug); Septoria albopunctata (Septoria leaf spot of blueberry); Stephanitis takeyai (takeya, lace bug); Tylenchorhynchus claytoni (stunt nematode); Zeuzera pyrina (wood leopard moth)

Minor host of:

Aleurodicus dispersus (whitefly); Aphelenchoides ritzemabosi (Chrysanthemum foliar eelworm); Archips fuscocupreanus; Armillaria mellea (armillaria root rot); Armillaria tabescens (armillaria root rot); Botryosphaeria parva; Botryosphaeria ribis (canker: apple); Brevipalpus californicus (citrus flat mite); Calonectria colhounii; Candidatus Phytoplasma asteris (yellow disease phytoplasmas); Ceroplastes ceriferus (Indian wax scale); Coccus hesperidum (brown soft scale); Diaspidiotus perniciosus (San José scale); Duponchelia fovealis (Southern European marshland pyralid); Ericolophium holsti; Maconellicoccus hirsutus (pink hibiscus mealybug); Monilinia fructigena (brown rot); Neofusicoccum luteum; Orgyia leucostigma (white-marked tussock moth); Otiorhynchus armadillo (armadillo weevil); Otiorhynchus rugosostriatus (rough strawberry root weevil); Otiorhynchus salicicola; Otiorhynchus singularis (clay coloured weevil); Otiorhynchus sulcatus (vine weevil); Paratrichodorus porosus; Phenacoccus multicerarii; Phytophthora cambivora (root rot of forest trees); Phytophthora cinnamomi (Phytophthora dieback); Phytophthora heveae (brazil nut leaf blight); Phytophthora inflata; Phytophthora nicotianae (black shank); Phytophthora plurivora; Phytophthora ramorum (Sudden Oak Death (SOD)); Podosphaera pannosa (powdery mildew of rose); Pseudaonidia duplex (camphor, scale); Rhodococcus fascians (fasciation: leafy gall); Rosellinia necatrix (dematophora root rot); Toxoptera odinae (mango aphid)

Wild host of:

Ceroplastes rubens (red wax scale); Chrysomyxa himalensis (needle rust of spruce); Parabemisia myricae (bayberry whitefly); Sophonia orientalis (two-spotted leafhopper)

Associated with (not a host):

Candidatus Phytoplasma solani (Stolbur phytoplasma)

Host of (source - data mining):

Armillaria limonea; Armillaria novae-zelandiae; Caloptilia azaleella; Datana major; Dialeurodes chittendeni; Dyscinetus morator; Graphocephala fennahi; Lyonetia prunifoliella; Microsphaera penicillata (powdery mildew of alder); Phytophthora citricola (black hop root rot); Pycnostysanus azaleae; Stephanitis pyrioides (azalea, lace bug); Synanthedon rhododendri (rhododendron, borer); Tetranychus urticae (two-spotted spider mite); Thrips nigropilosus (chrysanthemum thrips); Trialeurodes vaporariorum (whitefly, greenhouse)