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, ...

Denise S. of Santa Rosa asks: I have been growing roses for many years. For the last 2 years, my roses have not grown as vigorously as they have in the past. No sooner do they leaf out in the spring, ...

Your garden is looking good, with everything lush and blooming. But now you’ve noticed a weird grayish-white film on some ...

1 Stop mildew from spreading on roses by spraying weekly with diluted skim milk (1 part skim milk mixed with 9 parts water) or with products containing triforine or chlorothalonil fungicide. Although ...

Answer: Mildew is definitely present on your rose bush leaves. Mildew is a fungal disease that lives on dead leaves or the soil and can persist for years. To prevent the mildew continuum, make sure ...

A little effort now can prevent this scene: Your roses are growing nicely when the new leaves begin turning curly with white patches. The blooms look wilted. The leaf and flower ailments are related ...

Q: My rose bushes seem to be a magnet for mildew, aphids and whatever else is going around. Is there a way to get these problems under control without spending all of my spare time on them? A: Sucking ...

Roses are renowned for being quite resilient and long-lasting as they will bloom for months, but they can be quite susceptible to fungal disease during November if not properly cared for. These ...

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 ...

Q: I am confused by my roses. I planted about 10 bareroots in December and they took off just fine. The foliage was a healthy green, thrived through the rainy season and, as soon as May came, I had ...

Q. My roses look terrible. The leaves are falling off and the ones that remain have ugly spots all over them. I’ve been told I have black spot. I’ve made several applications of a fungicide but the ...

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 ...