List of Azalea Diseases

List Of Azalea Diseases

This article is a list of diseases of azalea (Rhododendron spp.).

Fungal diseases
Anthracnose

Glomerella cingulata
Colletotrichum gloeosporioides

Armillaria root rot (shoestring root rot)

Armillaria mellea
Rhizomorpha subcorticalis

Botrytis petal blight

Botrytis cinerea
Botryotinia fuckeliana

Bud and twig blight

Pycnostysanus azaleae
= Briosia azaleae
Cercospora leaf spot

Pseudocercospora handelii
= Cercospora handelii
Clitocybe root rot (mushroom root rot)

Armillaria tabescens
= Clitocybe tabescens
Cylindrocladium blight and root rot

Cylindrocladium scoparium
= Cylindrocladium floridanum
Calonectria kyotensis
Cylindrocladium theae
Calonectria theae

Damping-off, Pythium

Pythium spp.
Pythium irregulare
Damping-off, Rhizoctonia

Rhizoctonia solani
Thanatephorus cucumeris

Exobasidium leaf spot Exobasidium burtii
Leaf scorch Septoria azalea
Leaf and flower gall

Exobasidium vaccinii
= Exobasidium azaleae
Ovulinia petal blight

Ovulinia azaleae
Ovulitis azaleae

Pestalotia leaf spot twig blight, and crown rot

Pestalotiopsis sydowiana
= Pestalotia rhododendri
Phomopsis dieback

Phomopsis spp.
Phyllosticta leaf spot

Phyllosticta spp.
Phytophthora blight and dieback

Phytophthora nicotianae var. parasitica
= Phytophthora parasitica
Phytophthora root rot and wilt

Phytophthora cinnamomi
Phytophthora nicotianae var. parasitica
Powdery mildew

Erysiphe polygoni
Microsphaera penicillata
Pucciniastrum leaf rust

Pucciniastrum vaccinii
Twig blight

Monilinia azaleae
Web blight

Rhizoctonia ramicola
Ceratobasidium ramicola
Rhizoctonia sp. (binucleate)

Read more about List Of Azalea Diseases:  Nematodes, Parasitic

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