I have an ackee tree that has not grown much since the 6 years I planted it in the back yard. I think it is the “dumped” up rocks that are under the ground even though it has not affected our mango tree nearby. In fact the mango which was planted 3 years ago gave us to 2 seasons of great East Indian mangoes.
Anyway back to the ackee. It has not grown much until recently. It seems like after the 2 week of cold here in Florida it has sprung up about 6 inches. Maybe I need to send it to Canada or New York for the winter to grow.