I have Country Gentleman sweet corn and hulless Dakota popcorn seeds I want to plant. How far away from each other do I need to plant them?
Spacing would need to be considerable (about a football field away). However, if the varieties don't tassel at the same time, it won't matter. If they will tassel at the same time (e.g., they're both early, mid-season or late varieties), you can plant two weeks apart so they won't tassel at the same time. Check the "days to harvest" estimate on the seed packages to determine if they will shed pollen around the same time.
I would plant them at least one month apart.