Due to California’s dry summers, powdery mildews are more prevalent in Marin County than many other leaf-infecting diseases. These fungi affect virtually all kinds of plants: cereals, grasses, ...

DEAR JESSICA: I have a question about your column of Aug. 19, where you mention that the fungus that causes rust disease can be cured by getting rid of junipers, which host the fungus. I have two ...

This column is written by the Master Gardeners of Yolo County each month. It provides answers to selected questions recently asked by Yolo County gardeners. “Ask a Master Gardener” fields questions ...

There’s no new breakthrough on cherry powdery mildew management, but a diligent approach to the basics still works to keep orchards clean. “A lot of this stuff is going to […] ...

Question: What is this white coating on the leaves of my chokecherry tree, and what would you recommend to get rid of it? Answer: The likely culprit for those symptoms at this time of year in New ...

If you grow roses in your garden, at some point you will likely encounter a soft whitish coating on your plants’ leaves, stems, and sometimes buds. This substance is powdery mildew, known to experts ...

It seems to spring up overnight: Powdery mildew. The splotchy white and gray dust covers the leaves and stems of many of the most popular plants. Woody perennials like lilacs, roses, azaleas, ...

Q. The leaves of my peony plant have developed a whitish coating and now the leaves are turning yellow and they look awful. Is the plant going to die, and is there anything I can do to get rid of the ...