A while ago I read in one of pawpaw grower forum about Wabash pawpaw.
One grower in Texas swears that Wabash is the best and the most productive pawpaw for warmer zone. Additional bonus, according to him Wabash is self fertile, because when he only has one Wabash he gets plenty of fruit. He tried growing other varieties, but only Wabash thrives.
Based on his testimony, I purchased a Wabash and a Shenandoah.
I am in zone 10A, with dry and hot wind.
Both trees planted in ground 2.5 years ago from skinny sticks out of a 4" pot .
Wabash almost get full sun with just a bit of shade, Shenandoah get about 40% shade.
They are 10ft apart. My Wabash is now almost 6 ft tall with 4 branches, and Shenandoah is only 3 ft tall with 2 branches.
Wabash thrives here. On the first year I give extra water (3-4 times a week), but now I only water them once a week.
They both are growing, but Wabash is clearly a champion.
Time will tell if I will get any fruit.