Knee high by the fourth of July, my ass! Check these out! The tallest of the corn is taller than me, and this picture was taken July 2nd. Now sure, it's in a raised bed, but this bed has the least amount of soil in it - I'd guess they're only getting a 4-6" boost...probably towards the lower end. I just hope I don't have them crammed too close together...And that my staggering of two separate plantings each of two different varieties works out right. I've read you can plant different types of corn close to each other if they're days-to-harvest are at least two weeks apart, which these should be. Otherwise you risk cross-pollination of types like sweet, triple sweet, etc and I guess they can all turn out kinda funky. Check me later this summer to see how much corn I'm picking out of my teeth.
Oh, and check out that sunflower volunteer!