Elaine,
Several years ago the neighbor behind me planted a passion vine on the back fence between us (he was from Columbia and planted it for the fruit). He told me to enjoy any fruit on my side. But the vine wasn't setting any fruit, and I really wanted to try them. I decided to try and help nature along.
So most every night when I got home from work, I went to the back fence and wiggled my fingers around in the middle of the flowers I could reach (it was an 8' fence). It was working. A few weeks later he was working near the back of his property so I called him back to the fence. I couldn't see any fruit on his side so asked if he was having any luck with the vine he had planted up near his house. He was not.
I pointed out all the developing fruit on my side of the fence and explained what I had been doing. So he started playing pollinator on the vine up by his house and got as much fruit as he wanted from that one vine.
So maybe it will work for you. Worth a try!
