Q: Everything under one of my large potted plants on the patio is turning black. What isn’t black is sticky. What is wrong with this plant? A: From the pictures you sent me, we know that the black ...

White, wooly adults (figure 1, 2) with pink to purple eggs underneath (Figure 3) can be seen in late spring. The first generation was observed in late May through early June using a hand lens or ...

Q: The leaves on my houseplant are covered with a sticky sap. There are also small “bumps” on the stems. What is the problem? A: The houseplant may be infested with . These small, inconspicuous ...

Many people have a potted citrus plant or two that they keep indoors during the winter and move outdoors for the summer. It may be one of those dwarf trees that produce full-sized fruit. Or it could ...

Q: I’ve got a previously healthy stand of Mexican fence post cactus that has been infested with a white scale pest of some kind. Can you tell me what it is — and how I might get rid of it? A:Your ...