What's Eating My Lettuce and Spinach?
I’m having a problem with something eating my lettuce and spinach plants. As you can see, it leaves sharp, jagged cuts in the leaves, unlike the more rounded cuts made by caterpillars. Sometimes, small pieces are cut off and left on the ground. I have not seen any actual insects on the plants, and have not noticed any droppings.
This seems to happen overnight. I have seen carpenter ants in the area, but I’m not sure if they eat plants like these. I have sprayed them multiple times with Ortho MAX “Flower, Fruit, and Vegetable Insect Killer,” but it hasn’t helped. No rabbits or other animals have access to the garden.
I have planted lettuce and spinach in the same spot in previous years, but never had this problem. There are carrots and onions nearby, but they are untouched.
Any help would be appreciated. Thanks.
Zone 9 (Arizona)