| Here's what I wrote about other species in my book Uncommon Fruits for Every Garden (Timber Press, 2004): Some of the pawpaw’s deficiencies could be overcome by hybridization with other members of the genus Asimina, to wit some of the Southern species, with which pawpaw readily crosses and which excel in complementary qualities. For example, A. parviflora is an upright shrub or small tree that is cold-hardy to the coastal plain of Virginia, is self-fruitful, and ripens its (barely) edible fruits weeks before the pawpaw. To make the flowers more attractive to insects, one might introduce some blood of the fragrant-flowered A. reticulata. Pawpaws might even be grown for their flowers as well as their fruits if they had the lovely, four-inch-diameter flowers of A. obovata. Delicious hybrids also might result from cross-breeding the pawpaw with some of its tropical and subtropical relatives, such as the cherimoya (Annona cherimola) and sugar apple (Annona squamosa). Thus far, such hybrids are elusive. Lee Reich, PhD Books by Lee Reich: Uncommon Fruits for Every Garden A Northeast Gardener's Year The Pruning Book Weedless Gardening On Nov 9, 2005, at 3:38 PM, Ethan Natelson, M.D. wrote:
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