This year I tried planting jarrahdale and snow white pumpkins. The whites ended up dying off but the jarrahdale thrived quite nicely. Big long vine, leaves the size of dinner plates, lots of flowers, only one problem.

It never produced a female flower.

I knew that with only one vine if a female flower popped up I would most likely need to pollinate it myself to ensure it set a fruit, but I never saw one. Would check on it daily when I went to check my peppers, tomatoes, corn, etc, but every flower it ever put out was male.

Any tips on what to do next year to help me get some fruit, beyond just "Plant more of them and hope for the best"?