Unless you have bees around to pollinate them, you will have to hand-pollinate once you find a female. You have less than 24 hours to find a male flower open. My cousin in Massachusetts is a doctor and even he did not know all this. So I finally got the job done for him. Felt like the guy in "Starman" who said, "Now you will have a child and he will understand when he grows up." There is some other kid's story wherein you tell the character to sit on the pumpkin so you can hatch a horse. But it would have been too cruel to try that one on Dr. Paul.