Q: Last year powdery mildew spread across most of my garden including my pumpkin and squash patch. Do the spores overwinter in soil? Will turning soil help? Anything that should avoided at all costs? ...

Cheetah asks: I lost most of my last bean crop to powdery mildew. I want to try growing beans again. How can I prevent and treat this disease? The species of powdery mildew that appears on beans is ...

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 ...

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 ...

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 ...

Spots and patches of white or gray talcum powder-like substance on your plant means powdery mildew infected your plant. This is one of the most widespread fungal diseases and attacks a wide range of ...

Powdery mildew is one of those problems that is immediately obvious, once you know what to look for. Here's the bad news: Most local gardeners know it so well because everyone deals with it this time ...

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 ...

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 ...

Some of my plants are developing this white powdery substance on them. What is going on? AM What you are describing is called powdery mildew and can occur on most ornamental plants such as crape ...

“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 ...

Lots of plants, both edible and ornamental, can get powdery mildew. Unlike many other fungal plant diseases, the fungi that cause powdery mildew thrive in hot, dry weather that's often the norm in mid ...