I got a 15 gallon geffner in the Summer of 2019.
I planted it in the ground and let it grow the rest of the Summer. This Spring after it flushed
out it was about 8' tall and 10' wide. It over produced fruit and some of it didn't size up.
I will thin one fruit every 6" for now on. It is a very productive tree.. I would think you could
keep it 10 x 10 and get around 25 fruit easy. You probably will get 50 fruit and will have to thin.
I never hand pollinated and it was producing 2-3 in each cluster. Did you want to keep
it smaller to protect it in the Winter?
More of a placement issue.
I do have a question. Hypothetically if you were able to obtain Cherilata budwood could you graft it to your Atemoya tree?
Yes it would be compatible. I have a cherilata I got this year that is grafted on pond apple and I pugged it late
this Fall. The leaves are still dark green while all my other annonas are partially defoliated and dormant and what leaves are left
are old and about to fall off. I have sugar apples, atemoyas, custard apples, 1 ilama , 1 sour sop and 1 bright green
cherilata. The cherilata is a beast. I have had 5 nights in the 38-40F range already.