Pollen may then be applied to female stage flowers in the morning. Pollinate every two or three days, and only flowers easily reached inside the tree, to avoid sunburned and wind-damaged fruit. If pollination efforts are quite successful, it may be necessary to thin the fruit. Too much fruit may result in small size and adversely effect future yields. Since there are no recognized rootstocks for cherimoyas, seedlings are universally utilized.
Seeds remain viable for two to three years if kept dry and protected from weevil and fungi.
In frost-free areas, it is recommended that seedlings for spring grafting be planted in their ultimate location in the fall and grafted in the ground the following spring. Grafting is most successful in January through May provided previous years leaves have not been shed from the potential scionwood. During this period no scion preparation is required other than removal of leaves. All normal grafting techniques appear to be equally successful. However in topworking, nurse branches are desirable if not essential for success.