| I have a pot with Petunias and Marigolds. They are slowly dying, and have a soapy, iridescent residue. What is it? Pest? |
| The silvery residue is probably from slugs or snails. These pests feed at night so you rarely see them, but their damage is quite apparent. I use the iron based product called Sluggo. It works beautifully. Give it a try. |
