Has anyone tried using Bayer 3 and 1 systemic on dahlias for white flies, mites, etc? Do you think it could be put on as a spray?
Yikes. Have you looked up the ingredients on google? I looked up just the first ingredient, which is linked to derangement disorder in honey bees.
Why not just try insecticidal soap?
I wonder where I heard about the Bayer? Yes, I will get some Neem and make up a solution.