My container pumpkin grew so fast that it bloomed 4 nice females before the first male. It drove me crazy, but I did my best to pollinate them by prying open a couple of males that were a day or so away from blooming. Frankly, I saw no pollen inside the males. So 3 of the 4 were duds, BUT the fourth one took. I'm fairly sure it was the squash plants my neighbors are growing 2 houses away that did it. There has been good bee action. I've seen 5 honey bees at a time inside the huge orange flowers. Happy to report the males and females are more in sync now.