am: Too much water stress can cause fruit tree flower buds to abort. It's also possible that some of the varieties are not old enough to bloom. Wait another yr before you look for a problem that might not exist.

I'd bet they'll bloom next yr.

The Fruitnut

I dont think the lack of water had anything to do with the other fruits flowering, i had one when i lived inzone 5 long island N.Y. it was great it gave me 4 diff fruits.But when i moved to the southeast i tried 4 times to grow this tree, with no luck.I would only get one branch that would grow.The other grafts would not take.I think that the quality of grafting these trees has changed for the worse.and it is very hard to contact these people with the problem, so gave up. Just keep checking for signs of growth
from the grafts.(good luck)

Thanks for the information and advice. I will definitely wait - that is, I have no plans to do any drastic pruning on the tree. The other grafts have leaves and look basically OK, so perhaps they are just taking longer to fruit, as was suggested.

a.m.