Wait until fall frost kills tall phlox before pruning to the ground; fall pruning is keeps powdery mildew at bay. Regular deadheading and light trimming encourage bushier growth, extend blooming, and ...

“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 ...

Dahlias growing in Olympia’s South Capitol neighborhood. Earwigs are attracted to the decaying blooms of dahlias. The Olympian The second week of August is when lilies, dahlias and phlox can fill the ...

Dear Neil: My tall, old-fashioned perennial phlox plants have a mold on their leaves. They are blooming, and the tops of the plants look OK, but the bottom leaves are dying. They are under a mimosa ...

Phlox are easy-to-grow plants that come in a huge variety of colors to provide a bounty of fragrant flowers throughout the summer months. They require only a little annual maintenance to perform at ...

Your description sounds a lot like powdery mildew, which is an easy disease to recognize, and it is common in the landscape at this time of year. It can be a problem that shows up on annuals, ...

Spots and patches of white or gray talcum powder-like substance on your plant means powdery mildew infected your plant. Don't despair - you can reduce the risk of this disease with proper plant ...