You might be noticing powdery mildew (a disease that causes a grayish, powdery film on leaves) in your garden. Common plants that could be affected are lilacs, phlox, bee balm, zinnias and nannyberry ...

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 ...

Viburnum plants are popular in yards and gardens, especially during the spring when they bloom. Unfortunately, they’re prone to certain diseases that can compromize their health and appearance over ...

The leaves on this rosebush turned brown and the blossoms dried up due to gray mold and “black spot.” Photo courtesy UC Master Gardeners. If you’re a gardener in Santa Clara Valley and the Peninsula, ...

If you are like me, you have some peonies in your landscape. Peonies are great because the produce these giant flowers pretty early in the season. But after that, they are a nice, green, leafy plant ...

Mold and mildew: You may not know exactly what they are but you know one thing for sure—you definitely don't want either one in your home! Whether you think you've spotted the telltale signs of these ...

Powdery mildew represents a significant phytopathological challenge for cucurbit crops, including cucumber, melon and watermelon, impacting both yield and quality across diverse geographic regions.