Answer: It sounds like your Veronica (speedwell) and Phlox plants have powdery mildew — a very common disease found on ornamental plants. Powdery mildews are host specific, so the powdery mildew ...

Powdery mildew - a disease that causes a grayish, powdery film on leaves - is present now. Common plants that can get powdery mildew are lilacs, phlox, bee balm, zinnias and nannyberry viburnum. This ...

In late summer, many of our favorite shrubs and flowers develop a funny, grayish-white powder-like coating on the top of their leaves. Lilacs, roses, bee balm, tall garden phlox, peonies, asters and ...

Both in neighboring home gardens and at my own home these days, I am seeing powdery mildew. Powdery mildew is a disease that causes a grayish, powdery film on leaves, but it is nothing to worry about ...

Whether to prune perennials in November depends on the type of plant. Plants with powdery mildew should be pruned in fall to prevent spread of disease. Leaving plant growth intact in spring can ...

The cool nights and dewy mornings of late summer and fall are perfect for the growth and spread of powdery mildew on ornamental plants. Powdery mildew is a common fungal disease of a variety of ...

While there have been some problems in flower and vegetable gardens this year, most gardeners and growers say that, overall, this has been a terrific growing season. The warm temperatures and ...

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, ...

Powdery mildew season begins in late summer, when nights are clear and dewy, and the days warm and sunny. This fungal disease typically attacks roses, dahlias, summer squash and cucumber vines. Just ...