Last year I planted a Black Tartarine semi-dwarf. I wasn't reading the tag on it and thought that a north star would serve as a pollinator. I was wrong. Now I am looking for a good cross pollinator that can grow in Northeast Ohio will not a lot of problems. I have been reading that Bings are a pain to try and grow. Does anyone know if any sweet cherries that grow good in Ohio and can serve as a cross pollinator? Or am I asking for too much?