I think we could fruit any Cherimoya with the right cultural care. It would need to defoliate in September and bloom in October so that the fruit could develop over the cool part if the year and then finish ripening in April before things got too hot.
Has anyone attempted this September defoliation method for Cherimoya in a warm region yet? It sounds promising.
September has arrived and I’ve been considering defoliating my cherimoya to try to induce flowering. Anyone trying that this year? Does stripping leaves from a single branch work or does it need to be all/most branches?
You should be able to do individual branches. I will havr to wait to try this on my seedling cherimoya until it starts blooming. On a similar note, I do have bloom on a single branch of my Painter Cherilata where I cut it back about a month ago.
Lots of blooms happening. No one with fruit.
I realize that my views are not conventional on this topic. When I read the original comment, I pondered whether to share the results of my research or not. I was fairly certain that people would question it unless I had pictures of my own tree. Skepticism is understandable. Since other people had similar questions, I decided to share what I had learned inspite of this.
First, John Painter's cherimoya tree did get production of poorly formed fruits that fully ripened at about tennis ball size for many years here in Florida. Popenoe apparently reported similar results. Fruit is possible here even though they are poorly formed and production is very low. I believe that with a proper understanding of the problem and the correct cultural care the issue can be solved. I have based my comments and thinking on two scientific papers. The first was a study done in Japan detailing the exact effects of heat stress on cherimoya. It is 108 pages. I have not re-read it, but as I recall heat stress was most harmful to mid-size fruit. This explains why typical season cherimoya fruits stay small in Florida--mid size fruits in May get zapped by the heat.
https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://core.ac.uk/download/pdf/39210630.pdf&ved=2ahUKEwiXibK13qaIAxUeRzABHYBfNPUQFnoECBkQAQ&usg=AOvVaw1vns6FMuVNPJi56BXMYn-MIf fruits could be produced in the off season, our weather would be moderate and within the range that would not cause heat stress. This is where the second article came in. It is a description of the procedures for prodicing off season cherimoya in Spain. While I am not certain of the exact timing for Florida conditions because I have not had the opportunity to experiment with that, yet, the logic is sound and science based. I have linked both articles for anyone who would like to draw their own conclusions.
https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://journals.ashs.org/horttech/downloadpdf/view/journals/horttech/18/1/article-p24.pdf&ved=2ahUKEwjSmriK46aIAxX9tYQIHVGeCu0QFnoECA4QAQ&usg=AOvVaw1KGrN63lxl1QTfgEqie-1a