I love working with Annonas. You can heavy prune in late winter here in Florida just before they pop and really get into detail work combing over every inch and stripping leaves. During the growing season you can prune and strip multiple times and force flowering and extend fruiting season with hand pollination.
Here are some examples of some trees I have worked with and the troubleshooting and rejuvenation I dealt with when the Manatee Rare Fruit Council hired me to maintain the planting at Palma Sola.
Pruned Dream canopy at my good friends Darryl's place sweetsonggroves.com here in Sarasota. I did this a few weeks back and it is starting to push out new growth now.
These are the Lisa and Gefner at Palma Sola. I don't know how much pruning was done in the past but these had some real gnarly scaffolding architecture.
Lisa a little over a year ago. Planted for years without proper training.
After corrective pruning. This really scared some of the club members. hahaha
Lisa after this year. A little bit of shaping during the growing season.
Lisa after I pruned a couple a few weeks back.
Gefner a little over a year ago. Planted and left untrained.
Initial reset a little over a year ago.
Gefner after the growing season.
Gefner after pruning about 3 weeks ago.
Right now is a good time to prune and strip all the leaves off here in Florida. This will work with the common Annona species like Atemoya, reticulata, macroprophyllata and squamosa.