Remove infected tissue by mowing strawberry beds. To prevent powdery mildew from forming in the first place, avoid low-temperature, high-humidity environments. Mulching around the base of the plant can help prevent this issue and keep mildew off your plants. Preventing the spread and/or severity of powdery mildew is the most cost-effective way of dealing with the fungus. One of the most common fungal diseases of strawberries is powdery mildew. This powdery mildew can kill the plants. Powdery mildew can take away the plant’s nutrients therefore the plant can become weaker, less bloom and slow down the plant’s growth. Powdery mildew thrives in temperatures 50-65 degrees Fahrenheit with humidity levels of 80-90 percent. This is the primary way powdery mildew spores get onto the plant. Treat powdery mildew by applying fungicide. 6. Powdery mildew hates water; the only caveat with this method is to do it early in the day so the foliage completely dries before cooler evening temperatures arrive. Milk and Whey. Using Fungicidal Sprays You can tell if your pumpkins are infected with downy mildew, because there will be yellowish spots on the upper surface of the leaves and purple to gray spots on the bottom of the leaves. To prevent strawberry fungal disease, such as powdery mildew and fruit rot, grow resistant varieties, provide good drainage and spray fungicides when necessary. If the powdery mildew has covered the plants’ leaves, the photosynthesis depleted and the infected leaves may fall. Using a mixture of 40% milk and 60% water is a great way of treating powdery mildew. Then, treat with fungicides like JMS Stylet oil, Nova 40W, and Rally 40 W, once flowering begins. A pilot project in Kings County has shown promising results in the use of UV light to help control a damaging mildew and mites on strawberry plants. Interestingly, an effective means of preventing and treating powdery mildew is to spray the foliage of your plants daily with water from the hose. Powdery mildew is far more common compared to downy mildew but it is important to recognise the difference between the two if you plan to treat either of them. Fungicides that work on downy mildew are ineffective on powdery mildew, and vice versa. The best defense against powdery mildew is to plant resistant varieties of strawberries. They key identifier is that downy mildew has the white powder on the under side of the leaves only whereas powdery mildew has a white powder on both the underside and top of the leaves.