OkI got 12 ears out of 12 plants of heirloom corn seeds from Judith in Arkansas Ozarks, 5/6 mountain morado from the 3rd planting. Zero from 9 giant Inca: 4 of them snapped in the storms and 4 tasseled without ear, one had normal ear but died later in drought and heat. The corn kernels are a little over 4 lbs.
The Arkansas heirloom seeds out perform the other two that are originally from very different climates, one with very short growing season and the other requires very long season. Yet I feel I can improve my soil mineral content to get all the varieties to grow better and healthier. The bloody butcher can go from 8-row to 12-row, for example. Despite low to no yield, Mountain Morado and Inca Giant provide valuable information about soil nutrition so I will still trial them next year.