At this point all you can do is add more nitrogen and hope for the best. Without knowing much about its growth cycle all I can do is guess. I'd say it wasn't a light issue. It's bottom growth died off which stressed it and caused it to tassel early. Could be lack of nitrogen, drought, over watering or transplant shock from day 1.

It is a new garden. I decided to get rid of my planting boxes and actually put in a full garden this year. I also feel they should have been on the other side of the garden, but my planting boxes were there and already had plants in them. I built the one side of the garden, transplanted (again) the plants, removed the boxes, and built the rest of the garden.

I feel I may have stunted them by moving them the 2nd time. But they are also a shorter corn variety (4-5 feet), but I feel they should have been taller before getting tassels.

I will continue to feed them and hope they get taller. I still think they will produce either way.

Next year I will be sure to place them better (as it won't be a rushed mess to get things out of the way... . ha ha ha)

Thanks for the advice and help!!

Sounds like the transplant then. Early tassels can be bad if the female flowers/silks aren't present. If they are in full tassel and no silks, pollination will be bad and cobs won't form proper. If that happens you could probably save some of the pollen and manually pollinate it once the silks are present. Would probably require freezing it though, not sure.