Garden columnist Dan Gill answers readers' questions each week. To send a question, email Gill at dgill@agcenter.lsu.edu. I have some Japanese yew shrubs that are a couple of years old that I planted ...

QUESTION: My gardenia has, what I think is, a very bad case of sooty mold. Last summer it had whiteflies, and I tried to get rid of them using a garden hose, but was not very successful. I tried ...

Garden columnist Dan Gill answers readers' questions each week. To send a question, email Gill at gnogardening@agcenter.lsu.edu. I'm growing a variety of peppers (Cayenne, Tabasco, Habanero, etc.). I ...

Q: What is this on my crape myrtle (the white growth on top of the black layer), and what should I use to control both of them? A: The white insects are crape myrtle bark scale. They’re a relatively ...

Question: Last summer my azaleas, gardenias and even my car were completely covered in a black growth. Later I noticed that the crape myrtle that is in the same bed and near the car was covered in the ...