I have about a 6 year old Rainier Cherry tree never got more then 50 cherries off it. Well I planed a Stella Cherry Tree about 3 years ago for a good pollinator. Looking at the Rainier from my deck today I see that there are about 50 white flowers all on the RIGHT side of the tree, not a one from center to left side. I can't tell if the left side is a graft that is not bearing fruit and it seem that it get full leaf later then right side. The tree is in the open and gets good sun. I planted a black Tartan last week thinking it would be a better pollinator. All in all the tree looks healthy,. I am located in Northern California.
Joe
Joe