Q: Every June for several years now, our two Norway maples have a soft, sticky white "critter" that looks like a wrinkled snow flake and milky stick substance. This lasts a couple of weeks. This year ...

Q: What are these weird white things on my citrus trees? They don’t seem like they’re moving, but they sure do attract ants! A: Cottony cushion scale is a common pest of citrus, but can also infest ...

Q. What are these weird white things on my citrus trees? They don’t seem like they’re moving, but they sure do attract ants! Cottony cushion scale is a common pest of citrus, but can also infest other ...

Question: I am having a problem with my Meyer lemon trees. I bought the tree last spring and didn't seem to have any problems all summer long. Shortly after moving the trees in for the winter, I began ...

Residents in Mount Prospect have been wondering about a sticky black soot-like substance coating their outdoor surfaces. Turns out, it's actually secretions from a bug. The stick residue has been ...

For whatever reason, my office has seen an explosion of homeowners bringing in branches covered in cottony maple scale. I believe 100% of the cases to be on either silver maple (Acer saccharinum) or ...

Q: Last year, we bought a Meyer lemon and planted it in a large pot. We got more than 30 lemons off this little tree. I noticed a lot of sap near the base of the tree, then a bunch of furry little ...

I have a 20-year-old Canadian hemlock hedge at 5-feet tall. Many of the hemlocks in my neighborhood have woolly aphids on them. I just discovered a few of mine have a small outbreak on them. What ...

Q:My 8-year-old daughter would like to identify something we found on the branch of a lemon tree (see photo). It is striking how these mimic the blossoms. For scale, the lemon is 7.5 centimeters in ...