This is my first year growing Passion Vines. I've got some purple edulis, and found the first fruit the other day. I also have other passion vines (according to the nursery are not self fruitful) that I planted just for the flowers. My question is, do I trim off the sepals once the flower has dropped off? Or should I just leave them - they are still green and look like they'll stay that way. I don't see any fruit on that vine either (and didn't expect any).

Thanks!