In addition, Asimina spp. Seedling Production As soon as flesh is soft, fruit should be collected for seed. Seeds are easily extracted following maceration of fruit in water and floating off of pulp. This aids in reducing fungal and bacterial contamination during storage. Seeds should not be allowed to dry out.
Seeds have a dormant immature embryo and require stratification.
Provided that desiccation and microbial contamination do not occur, seeds may be stored for several years under refrigerated conditions with little loss in viability. Stratified or afterripened seeds are planted either in a prepared seedbed or in containers. Scarification of the seed coat is not necessary. Pawpaw seed germination is hypogeal. Seeds should be sown to a 3 cm depth in a moist, well drained soil or other medium that has good aeration in containers that are 20-25 cm deep.