Identifying Catnip Plant Diseases Fungal Diseases. Fungal diseases are one of the most common types of diseases that can affect catnip plants. Some of the most common fungal diseases that can affect catnip include: Powdery Mildew: This disease is characterized by a white or gray powder that appears on the leaves of the plant. It can cause the ...

Powdery mildew is a fungal disease in plants that is commonly seen in warm, dry climates and causes a white-gray, powdery substance to appear on leaves. Several different species of fungi can cause powdery mildew.

Is the plant in the photo catnip? Most likely sucking pests such as mites, aphids, whitefly etc. There is a disease called powdery mildew which is a common problem, but it looks almost like fine flour on the leaf. This does not really look like that. Catnip is in the mint family and likes more fertilizer and water.

Powdery mildew is a common fungal disease that affects many plants, including catmint. The fungus causes white spots to form on the leaves, which can then spread quickly. To help control powdery mildew on catmint, be sure to provide the plant with adequate air circulation and water it only when the soil is dry.

spider mites, they are extremely small and very hard too spot with naked eye, watch your catnip closely during the day and search for any "moving dots". Symptoms of heavy infestations include webbings. powdery mildew, very common fungal disease, its main symptoms are white spots on leaves, looking like flour