This article is a list of diseases of hydrangeas (Hydrangea macrophylla).
Bacterial diseases edit
| Bacterial diseases | |
|---|---|
| Bacterial blight | Pseudomonas solanacearum |
| Bacterial leaf spot | Pseudomonas cichorii |
Fungal diseases edit
| Fungal diseases | |
|---|---|
| Bud and flower |
Cercospora hydrangeae |
| Powdery mildew | |
| Root rot |
Pythium spp. |
| Rust | |
| Southern blight |
Sclerotium rolfsii |
Viral diseases edit
| Viral diseases | |
|---|---|
| Phyllody | Hydrangea ringspot virus |
| Ringspots | Hydrangea ringspot virus |
| Tobacco ringspot virus | Tomato spotted wilt virus |