Its an old saying I remember reading: "Plant corn when the oak leaves are a big as squirrels ears." My guess is this weekend will be perfect timing for planting corn.
A couple months ago my son asked me to plant popcorn again this year. I had decided I didn't have enough room and hadn't set aside space for popcorn. But I'm not one to refuse a gardening request. So I revised my plan (below) to make room for corn.
In addition to the added popcorn, when I went to prepare the bed for the potatoes as planned, I can across two giant underground rocks that I couldn't move. So the potato bed had to be moved too. Here is the revised plan. We'll see how well I follow this.