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.

Gardening Organic prevention and management of powdery mildew on plants Spots and patches of white or gray talcum powder-like substance on your plant means powdery mildew infected your plant. Don't ...

“Help, my plant is covered in a white, powdery fungus! What do I do?” First, don’t panic. While powdery mildew may not look pretty, it rarely causes significant damage except in cases of severe ...

Whether you’re a novice or avid gardener, discovering your greenery is dealing with a disease is never a pleasant surprise. One frequent problem that often pops up during the warmer months: powdery ...

The gardening season has started and if you’ve got questions, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service. OSU Extension faculty and ...

Q. The leaves of my peony plant have developed a whitish coating and now the leaves are turning yellow and they look awful. Is the plant going to die, and is there anything I can do to get rid of the ...

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 ...

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 ...

In late summer, many of our favorite shrubs and flowers develop a funny, grayish-white powder-like coating on the top of their leaves. Lilacs, roses, bee balm, tall garden phlox, peonies, asters and ...

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 ...

Q: My peonies have powdery mildew and I'm wondering what I can do to get rid of it. What causes this? I'm planning to divide them this fall but I don't want to spread it into a different flower bed. - ...