They can cause allergies or other health problems. Similarly, black, gray, or dark green spots may be sooty mold, which is harmless to plants unless it grows out of control since it's also a common ...

Garden columnist Dan Gill answers readers' questions each week. To send a question, email Gill at [email protected]. About a year ago, we redid our flowerbeds and added three crape myrtle trees.

Dear Neil: I had a black, mosslike substance all over my crape myrtles from late summer throughout fall. Sprays didn't seem to help at all. What is it? What can I do to stop it next year? I'm used to ...

Q. Last year I planted three Wolfpack azaleas. One died this winter and the other two have died out in the center of the plant. I replaced all three but decided to plant the two half dead azaleas in ...

We enjoy magnolia trees for their beautiful early spring flowers, but in summer they sometimes get downright ugly. Gardeners may notice a fuzzy black coating on branches or a sticky glaze that ...

There's nothing quite as majestic and imposing as a fully-grown cedar tree with its broad horizontal branches and fragrant evergreen needles in delightful shades of green and blue. Thanks to its ...