There are many different remedies for powdery mildew, including the ones referenced above and the ones in this link /pest/powdery-mildew . Most fungicide options are best used before powdery mildew is present and also can cause other issues in the garden when it comes to pollinators and negatively affecting certain plants. Make sure to research any product you plan to use on specific plants.
Many remedies have been used to slow or stop the spread when used early on, but once the fungi is established it can be difficult to eradicate. It is best to work toward prevention of powdery mildew early in the season before the conditions—warm, dry climate with fairly high humidity—are present. When planting in the future, look for powdery mildew resistant varieties and make sure to space new plants to allow for adequate air circulation. For current plantings, you can prune in a way that supports better air flow and allows more light to reach your plants, limiting the conditions powdery mildew needs to spread. For severe infestations, it might be best to remove the plant to protect the rest of your garden.
You will also want to check plants that have been affected by powdery mildew at the end of the season and remove any areas where it is present because dormant spores can overwinter on old vegetive material or weeds.
Hi Julie,
There are many different remedies for powdery mildew, including the ones referenced above and the ones in this link /pest/powdery-mildew . Most fungicide options are best used before powdery mildew is present and also can cause other issues in the garden when it comes to pollinators and negatively affecting certain plants. Make sure to research any product you plan to use on specific plants.
Many remedies have been used to slow or stop the spread when used early on, but once the fungi is established it can be difficult to eradicate. It is best to work toward prevention of powdery mildew early in the season before the conditions—warm, dry climate with fairly high humidity—are present. When planting in the future, look for powdery mildew resistant varieties and make sure to space new plants to allow for adequate air circulation. For current plantings, you can prune in a way that supports better air flow and allows more light to reach your plants, limiting the conditions powdery mildew needs to spread. For severe infestations, it might be best to remove the plant to protect the rest of your garden.
You will also want to check plants that have been affected by powdery mildew at the end of the season and remove any areas where it is present because dormant spores can overwinter on old vegetive material or weeds.