The pumpkin plant is now in high gear. It's putting out eight or so blossoms every morning now, and so far, every single one of them since the very first is male! There is one lonely female blossom developing at the very end of the vine. I've been checking it every morning for the past week, and it doesn't seem to be getting any bigger or any closer to blooming.
Just wait. It'll finally open while I'm visiting the country house.