They're pollinated by blow flies, not by the insects that pollinate most other plants. Which is why it's sometimes recommended to hang small animal carcasses (r

They're pollinated by blow flies, not by the insects that pollinate most other plants. Which is why it's sometimes recommended to hang small animal carcasses (rabbits, rats) between paw paw plants. For those of us who aren't too keen on nailing up dead animals, there's manual pollination.