Avoid some of the more common landscaping mistakes this fall and winter with the help of Rusty Maulding.

This week the panel is talking about heirloom tomatoes as well as zucchinis, flies, and bees.

The panel is talking about hostas, bees, and worms.

"The long-standing assumption is that fungicides won't be toxic to insects," says May Berenbaum, an entomologist at the University of Illinois Urbana-Champaign. But Berenbaum and her colleagues found, in a study published Monday by the Proceedings of the National Academy of Sciences, that fungicides can harm bees by making it harder for them to metabolize their food.

Bees are essential to our lives, yet they are dying by the thousands. Experts say there's no one solution for protecting them.