Dear Master Gardener: I had a hibiscus on my patio last summer and brought it in for the winter. Now it has little specks all over it and they move, so I suspect I have some sort of insect pest. What ...

Garden columnist Dan Gill answers readers' questions each week. To send a question, email Gill at [email protected]. My problem is with black stuff on my crape myrtles' leaves and bark. It ...