DEAR GARDEN COACH: I have roses that all had mildew, all year, even though they were all labeled “disease resistant.” I put systemic fertilizer and did some spray and it didn’t help. It did not keep ...

Catch this troublesome disease early.

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, ...

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, ...

UC Davis researchers have uncovered important genetic clues about the pathogen that causes grape powdery mildew, among the most destructive vineyard pests throughout California and the world.

Powdery mildews are a common, widespread and an easily recognizable disease that, when conditions are right, can infect a variety of trees (except conifers), shrubs, perennials, annuals, vegetables, ...

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 ...

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 ...

Q: I have a crape myrtle and every year it is covered in a whitish powder. I have been told it is powdery mildew but I don’t know how to control it. A: Powdery mildew is a plant disease caused by a ...

DEAR GARDEN COACH: I have roses that all had mildew, all year, even though they were all labeled “disease resistant.” I put systemic fertilizer and did some spray and it didn”t help. It did not keep ...