This article is a list of diseases of rhododendron (Rhododendron spp.).
Bacterial diseases edit
| Bacterial diseases | |
|---|---|
| Crown gall | Agrobacterium tumefaciens |
Fungal diseases edit
| Fungal diseases | |
|---|---|
| Armillaria root rot Shoestring root rot |
Armillaria mellea |
| Botryosphaeria dieback |
Botryosphaeria dothidea |
| Botrytis leaf and petal blight |
Botrytis cinerea |
| Bud and twig blight | Pycnostysanus azaleae |
| Cercospora leaf spot | |
| Chrysomyxa leaf rust |
Chrysomyxa ledi var. rhododendri |
| Clitocybe root rot (mushroom root rot) | |
| Coryneum leaf spot | |
| Cryptostictis leaf spot | |
| Cylindrocarpon canker and wilt | |
| Damping-off, Pythium |
Pythium spp. |
| Damping-off, Rhizoctonia |
Rhizoctonia solani |
| Exobasidium leaf spot | |
| Glomerella canker and dieback |
Glomerella cingulata |
| Gray blight | |
| Leaf and flower gall | |
| Lophodermium leaf spot | |
| Ovulinia petal blight |
Ovulinia azaleae |
| Pestalosphaeria leaf spot |
Pestalosphaeria concentrica |
| Pestalotia leaf spot | |
| Phymatotrichum root rot (cotton root rot) | |
| Phytophthora dieback |
Phytophthora nicotianae var. parasitica |
| Phytophthora root rot |
Phytophthora cactorum |
| Powdery mildew |
Microsphaera vaccinii |
| Pucciniastrum leaf rust | |
| Septoria leaf spot | |
| Spot anthracnose |
Sphaceloma sp. |
| Stem canker |
Cylindrocladium theae |
| Witches' broom | |
Nematodes, parasitic edit
| Nematodes, parasitic | |
|---|---|
| Dagger, American | Xiphinema americanum |
| Lance | Hoplalaimus galeatus |
| Sheath | Hemicycliophora spp. |
| Spiral | Helicotylenchus erythinae |
| Stubby-root | Paratrichodorus spp. |
| Stunt | Tylenchorhynchus claytoni |
Viral diseases edit
| Viral diseases | |
|---|---|
| Necrotic ringspot | Potato virus X group |