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 ...

Q: What could be causing my tree to be so ragged looking and leafless? My neighbors' trees, which appear to be the same type, look fine and looked this way the past four or five years. Theirs are full ...

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 ...

Q: Thank you for addressing my problem of rabbits eating my dwarf Burford hollies. I had actually considered using chicken wire to discourage them. But you did not answer my question about whether the ...