Last year I was totally plagued by the vine borer. I lost three different crops. This year I let my early radishes go to flowering and no vine borer. I know that I am chancing it by even posting this but I think it does work. I am also totally amazed at the size of radishes as they bloom. They are freakin huge like 3 to 4 feet tall. I let a lot of them flower hoping that more would be better. I will probably do it again.