An expert rosarian offers advice on how to block or minimize powdery mildew, black spot, rust and more in San Diego gardens.

Powdery mildew is common plant disease that can quickly make a mess of your roses. It shows up as a dusty white coating on the plant’s leaves, stems, and buds. Powdery mildew won’t kill your roses, ...

CORVALLIS – Mild winter weather will most likely coax roses into bloom early, which means dealing with the usual diseases and pests earlier, too. When it comes to one of the country’s most popular ...

It can be scary when your plants are sickly. Some diseases can be managed while others are detrimental, so it's important to ...

If you’re tired of spraying roses for black spot, powdery mildew and aphids, there’s a better way. Put 2 ounces of a commercially available product in 1 quart of water and pour the mixture around the ...

Find out how a gardener used a £1.20 full fat milk hack to save his rose plants from black spot - one of the 'most serious' ...

Powdery mildew appears as white or gray spots on roses, usually during warm, humid conditions. Catching infections early is key to stopping them from spreading by removing diseased parts and applying ...