There are not many diseases of Azaleas open-air cultivation, mainly including flower rot, bacterial leaf spot, Rhizoctonia, brown spot, anthracnose, and root rot.

The main insect pests are: stephanitis nashi (lace-bug), diamond spodoptera (Earias pudicana pupilana Stamdinger), mites, leaf roller moths, grass borers, and so on.

Physiological disease of Azaleas including feezing damage, high-temperature harm, dry damage etc,.