This article is a list of diseases of azalea (Rhododendron spp.).
Glomerella cingulata Colletotrichum gloeosporioides [anamorph] Armillaria mellea Rhizomorpha subcorticalis [anamorph] Botrytis cinereaBotryotinia fuckeliana [teleomorph] Pycnostysanus azaleae = Briosia azaleae Pseudocercospora handelii = Cercospora handelii Armillaria tabescens = Clitocybe tabescens Cylindrocladium scoparium = Cylindrocladium floridanum Calonectria kyotensis [teleomorph] Cylindrocladium theae Calonectria theae [teleomorph] Pythium spp.
Pythium irregulare Rhizoctonia solani Thanatephorus cucumeris [teleomorph] Exobasidium vaccinii = Exobasidium azaleae Ovulinia azaleae Ovulitis azaleae [anamorph] Pestalotiopsis sydowiana = Pestalotia rhododendri Phomopsis spp.
Phytophthora nicotianae var.
parasitica Erysiphe polygoni Microsphaera penicillata Pucciniastrum vaccinii Monilinia azaleae Rhizoctonia ramicola Ceratobasidium ramicola [teleomorph] Rhizoctonia sp.