List of azalea diseases
# List of azalea diseases

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

## Fungal diseases

Fungal diseases :

| Anthracnose | Glomerella cingulata Colletotrichum gloeosporioides [anamorph] |
| - | - |
| Armillaria root rot (shoestring root rot) | Armillaria mellea Rhizomorpha subcorticalis [anamorph] |
| Botrytis petal blight | Botrytis cinerea Botryotinia fuckeliana [teleomorph] |
| 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 [teleomorph] Cylindrocladium theae Calonectria theae [teleomorph] |
| Damping-off, Pythium | Pythium spp. Pythium irregulare |
| Damping-off, Rhizoctonia | Rhizoctonia solani Thanatephorus cucumeris [teleomorph] |
| Exobasidium leaf spot | Exobasidium burtii |
| Leaf scorch | Septoria azaleae |
| Leaf and flower gall | Exobasidium vaccinii = Exobasidium azaleae |
| Ovulinia petal blight | Ovulinia azaleae Ovulitis azaleae [anamorph] |
| 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 [teleomorph] Rhizoctonia sp. (binucleate) |

## Nematodes, parasitic

Nematodes, parasitic :

| Dagger, American | Xiphinema americanum |
| - | - |
| Pin | Paratylenchus curvitatus |
| Root-knot | Meloidogyne spp. |
| Sheath | Hemicycliophora spp. |
| Spiral | Rotylenchus buxophilus R. robustus |
| Stubby-root | Paratrichodorus minor |
| Stunt | Tylenchorhynchus claytoni |
