Huge mazes are cut out of Field Corn! Why waste the sweet corn on a maze? Also the mazes that I have seen are run in the Fall of the year. I think that the farmers might just use the corn from the rows that make the maze paths (maybe that is sold to dem Yan****).
As far as the right time in Iowa, I don't know if I was there during those 3 weeks or not - only remember my Uncle raving about how good the corn was and my cousins chiming in too.
Also, Virginia is a wonderful state that you could have hills, mountains, ocean, sandy soil, rocky soil, spring, summer, fall, and winter, snow and rain, heat, autumn leaves. Yes, some things are better in other states (autumn leaves much better in New England), but only VA and surrounding states (oh yeah, maybe the left coast too) have the variety spread out so evenly. Many people from other states live here and comment on how nice it is here; of course many of these people come here for jobs and that always makes a place nicer than no job.
Tim Robertson