Which disease is commonly found in ornamental plants?

The disease commonly found in ornamental plants is powdery mildew. Powdery mildew is a fungal infection that thrives in warm, dry climates with high humidity, which often affects a variety of ornamental species. It forms white to grayish powdery spots on leaves, stems, and buds, leading to aesthetic damage and potentially impacting the plant's health if left untreated. This disease is particularly prevalent in greenhouse and garden settings where humidity levels may fluctuate, providing the ideal conditions for fungal growth.

Other diseases, while also important, tend to target specific types of plants or conditions. Root rot, for instance, typically affects plants suffering from overwatering or poor drainage rather than being limited to ornamentals. Leaf blight can affect ornamental plants too, but it is often linked more closely to specific environmental conditions and can be less ubiquitous compared to powdery mildew. Fusarium wilt, while serious, is usually more prevalent in certain plants, particularly vegetables, and can be more specific to host plants and soil conditions.