For years I've used little hosta stems to prevent cutworms in my garden. One old hosta flower stem on each side of the plant. This year the cutworms have taken a couple of plants down anyway. I've had cutworm collars fail on me too in really bad years. I've even had cutworms climb the plants to cut off branches when they couldn't get to the stems when they were protected. Supposedly they don't climb. My cutworms didn't get the memo.
I'm thinking maybe put a few more hosta stems around. This time farther out from the stem so they can't even curl around it. Do you think that will stop them? I hope so. I've also lost a pepper plant to something else. I'm not sure what it is. Maybe slugs? The plant was eaten from the top down. The stem is still there, but all the leaves are gone. Shredded might be a better term.
At least I can catch the cutworms. As soon as I see any damage, I dig around where they cut and find the nasty worm. Usually about an inch or two under the soil. I dread years like these. Cutworms can be so vicious. I've even had one chew through a tomato stem three inches under the soil (below where I protect it). And years ago one chewed through a tomato stem that was about 3/16" thick already, past a cutworm collar.
I wonder what makes a bad cutworm year. I know we had a mild winter. Maybe that is it? Or maybe it is just a randomly bad year. Luckily not too many years are like this.