I have three pouteria trees that have set significant blooms once or twice but no fruit or even fruitlets yet. I don't actually know a whole lot about them, is it likely that they need same-species cross-pollination? They are: canistel (grafted, Bruce), green sapote (grafted), abiu (seedling). I don't have more than one of each species.
The canistel is in-ground in my greenhouse and probably doesn't seem many pollinators. The abiu and green sapote are in containers and were outside during bee season.