CharlieBear wrote:You might try Labor Day, kind of a traditional last date to plant winter squash and see if that works better for you. You could also plant a variety with a longer growing cycle.
I think CharlieBear was thinking Memorial Day. But yeah I think July 1 would be too late for typical pumpkin varieties. June 1-15 would be more like it.
Pay attention to the DTM -- typically earliest small ones would be about 90 days but most "early" are around 110, giants take 120 or more days. And they need the heat to grow the vines well so once the cooler weather and shorter days arrive they will slow down. I believe it takes about 55 days from blossom set to mature fruit.