My corn is falling as well, only it looks perfectly healthy, no soft spots or rot. The roots seem healthy. I have 4 per foot in a 4' X 4' deep box. My husband wanted the roots to grow deeper so we put it in a one foot instead of 6 inch box.

It was growing so well, all healthy and happy, and a couple of days ago a few started leaning heavily, now almost all are leaning.

Any ideas as to why or what we can do about it?