Types of Hydrangea Diseases
There are plenty of hydrangea diseases that your plant could catch. Typically, they are divided into three separate categories.
These diseases result from bacteria infecting the plant. Pseudomonas is the most common bacteria for this type of disease. You can see evidence of this type of infection if your plants start to develop blights or if there are spots on your leaves.
When a fungus infects your plant, there are other types of diseases that can result. Fungi can infect the bud or the flower, depending on the stage of development your plant is in. They can also create a powdery mildew all over the plant. Fungi can rot out the roots of hydrangeas and even cause an illness known as the southern blight. Under extremely rare circumstances, fungal infections can create a rust-colored substance all over your flower.
When your hydrangea is infected with a virus, you’ll find it to be quite different from the other two types of infections. The hydrangea ringspot virus is somewhat difficult to cure and can cause wilting in the plants if it runs unchecked for too long.