Something is killing the leaves and stems of my marigolds. It leaves the flowers alone. I live in zone 8 ( Oklahoma ) and have never had a problem with growing marigolds.
Certified GKH Gardening Expert
Slugs eat large holes in mature marigold leaves and will completely devour young plants. You won't commonly see slugs feeding on your marigolds because slugs are nocturnal, but you may see the slime trails they leave behind.
Birds, rabbits and disease could also strip leaves.