I think I know the answer to this, but when plants start growing, I become a wimp at pulling any of them out. I'm growing Fordhook zucchini in a container that is round, about 18" high at least and 18" across. I planted 4 seeds in it and they're all growing. Would they do okay that close together, or am I messing it up for all of them by leaving them all there? I will put up some trellis-type things around it to keep them upright. I think you're all gonna say - pull out 3 of them..........

Thanks. Give it to me straight, doc. :)