List of Rhododendron Diseases - Fungal Diseases

Fungal diseases
Armillaria root rot

Shoestring root rot

Armillaria mellea
Rhizomorpha subcorticalis

Botryosphaeria dieback

Botryosphaeria dothidea
Fusicoccum aesculi

Botrytis leaf and petal blight

Botrytis cinerea
Botryotinia fuckeliana

Bud and twig blight Pycnostysanus azaleae

= Briosia azaleae
Cercospora leaf spot

Pseudocercospora handelii
= Cercospora handelii
Chrysomyxa leaf rust

Chrysomyxa ledi var. rhododendri
Chrysomyxa piperiana
Chrysomyxa roanensis
Clitocybe root rot (mushroom root rot)

Armillaria tabescens
= Clitocybe tabescens
Coryneum leaf spot

Seimatosporium rhododendri
= Coryneum rhododendri
Cryptostictis leaf spot

Seimatosporium mariae
= Cryptostictis mariae
Cylindrocarpon canker and wilt

Cylindrocarpon destructans
= Cylindrocarpon radicicola
Damping-off, Pythium

Pythium spp.
Damping-off, Rhizoctonia

Rhizoctonia solani
Thanatephorus cucumeris

Exobasidium leaf spot

Exobasidium burtii
Glomerella canker and dieback

Glomerella cingulata
Colletotrichum gloeosporioides

Gray blight

Pestalotia sydowiana
Leaf and flower gall

Exobasidium vaccinii
= Exobasidium azaleae
Lophodermium leaf spot

Lophodermium schweinitzii
Ovulinia petal blight

Ovulinia azaleae
Ovulitis azaleae

Pestalosphaeria leaf spot

Pestalosphaeria concentrica
Pestalotiopsis guepini

Pestalotia leaf spot

Pestalotiopsis sydowiana
= Pestalotia rhododendri
Phymatotrichum root rot (cotton root rot)

Phymatotrichopsis omnivora
= Phymatotrichum omnivorum
Phytophthora dieback

Phytophthora nicotianae var. parasitica
= Phytophthora parasitica
Phytophthora cactorum
Phytophthora cinnamomi
Phytophthora citricola
Phytophthora citrophthora
Phytophthora heveae
Phytophthora lateralis
Phytophthora root rot

Phytophthora cactorum
Phytophthora cinnamomi
Phytophthora citricola
Powdery mildew

Microsphaera vaccinii
= Microsphaera penicillata var. vaccinii
Pucciniastrum leaf rust

Pucciniastrum vaccinii
Septoria leaf spot

Septoria rhododendri
Spot anthracnose

Sphaceloma sp.
Stem canker

Cylindrocladium theae
Calonectria theae

Witches' broom

Exobasidium vaccinii-uliginosi

Read more about this topic:  List Of Rhododendron Diseases

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