Learn how to identify, prevent, and treat powdery mildew with this guide. Discover organic and chemical treatment options, as well as management strategies for long-term control.

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Powdery mildew is a disease common in trees that appears as a white powdery ...

“My red rhododendron looks as if it has a layer of ash or white powder on it (above). What should I do?” asks Birds & Blooms reader Steven Graves of Aptos, California. Horticultural expert Melinda ...

UC Davis researchers have uncovered important genetic clues about the pathogen that causes grape powdery mildew, among the most destructive vineyard pests throughout California and the world.

Roman Gonzalez is the creator of the urban gardening blog MrBrownThumb, founder of the Chicago Seed Library, and a co-founder of One Seed Chicago. Powdery mildew is a widespread and easy to recognize ...

Powdery mildew is a fungal disease affecting many plants, causing a white or gray coating on leaves and slowing growth. The fungus thrives in warm, dry weather with high humidity, especially in ...

I had some beautiful columbines in pots that were killed by powdery mildew. I saved the seeds. Now I have 12 plants with signs of mildew. Should I let them go dormant, or fight the mildew with a ...

A new North Carolina State University study pinpoints the worldwide spread of a fungus that taints blueberry plants with powdery mildew, a disease that reduces blueberry yield and encourages the use ...

Q: Last year my grapes had such bad powdery mildew that even the grapes dried up and looked moldy and shriveled. I was told by the master gardeners at the farmer’s market that I needed to do something ...

Powdery mildew – or PM – can be a farmer’s worst nightmare. The mildew is easy to spot as it appears on the leaf as a matte-white frost—almost like that fake snow spray you often see around Christmas ...

The grayish white powdery growth you are seeing on the dahlia leaves is caused by a fungus and can also be a common garden problem on other plants. Many species of fungi can cause powdery mildew on ...