We have got raised beds installed last year. We have filled it with triple mix and planted some veggies. I got radish and carrots. Not sure if some were eaten by worms last year. This year I got few carrots which came out by themselves in the spring. I had to dig them out . I found that carrots, while good size, had long "trenches". I am not sure what kind of caterpillar or other creatures left them behind. I am wondering what it could be and how I can treat soil to get rid of them. I am growing tomatoes and herbs on the same raised bed and trying to avoid chemicals.
I would appreciate advises/suggestions