Cutworms are killing all of my flowers. I'm trying to get rid of them. I'm thinking about using Dawn dishwater and a small amount of bleach, but will that kill my plants?
Cutworms live at or near the base of the plants they are eating. Soap and bleach are not terribly effective on them as they are in the soil.
What works really well is diatomaceous earth around the base of the plant. Repeat every few days.
Or you can take a trowel and work the soil around the base of the plants and pop any suspects into some soap and water.