It's hard to see with a couple of them, but it looks like my seed potatoes have all officially sprouted.
This is a very ambitious garden. I have 10 garden boxes, 4 of which are 4'x5', and the others 4'x4'. With luck, I'll have far more produce in the fall than I know what to do with, and will be able to share my bounty with the neighbors.
I'll post more photos of the garden in a bit.