I can’t believe I never thought to do this before. I don’t like thinning seedlings because it always disturbs the roots to pull one of the plants out. Then I read somewhere to thin with scissors.
This is a great solution to the problem. All you do is snip the unwanted seedlings down at the base of the plant. It will quietly die away and let the other plant take over. I’m going to try this when I need to thin my carrots and beets this year.