Despite the specialized care provided, roses can become infected by a number of diseases, mainly caused by funguses. These include botrytis and powdery mildew, which attack the leaves and stems of the plants.
Meskipun sudah dipelihara dengan sangat teliti, mawar bisa terserang beberapa penyakit, terutama yang disebabkan oleh jamur, antara lain botritis dan embun tepung, yang menyerang daun dan batang tanaman.