I'm tring to grow Temptaion variety corn this year. The stalks are maybe 1
to 1.5 ft. tall and half of them are flopping over. I've tried to mound
dirt around the base and prop them up but it doesn't seem adequate. I have
them growing in 2 stalks per place, rows a foot apart and plants 8 inches
apart.

Did I not plant the seed deeply enough?

Is having two together a cause?

Should I just pull them and start with new seed considering the season is
still young? Maturity is stated as about 60 days.