Starting this thread as it looks like there isn’t one for these particular pawpaws.
The common pawpaw, Asimina triloba, has a number of topics dedicated to it. It is the largest and most common pawpaw, having by far the greatest range as well, growing in most of the warm eastern US except in parts of the deep and coastal South.
The Asimina genus however is most diverse in southern Georgia and in Florida.
In between these populations, geographically and likely genetically, is Asimina parviflora, a small, bushy shrub that grows in drier upland sites than the common pawpaw and generally replaces it in the deep South, in particular in the coastal plains region.
Asimina parviflora only grows up to about 8 ft tall, even less in poor soils, and is reported to be hardy in zones 7-10, making it both much less cold tolerant and much more heat tolerant than common pawpaw.
In areas where the two populations overlap they sometimes cross to give the natural hybrid Asimina × piedmontana so named for the piedmont region in which it tends to be found. For those not from the area, the Carolinas and Georgia are traditionally divided into three geographic regions: the mountains, which are the Appalachian mountains and their foothills, the piedmont, a region of rolling hills and deep red clay where most of the area’s major cities are located, and the coastal plains, the significantly flatter, often either swampy or excessively well-drained, sandy to loamy belt of lower elevation land formerly submerged under the sea.
I’d be curious to know if anyone here is growing either Asimina parviflora or Asimina × piedmontana and what you think of them.