I've been told that older OTs are harder to get seeds from than newer hybrids. A few years ago I pollinated my OTs with pollen from other OTs I had, all of them where older hybrids. But now I have used OT seedlings that I both have pollinated with pollen from other OTs ( I mostly use mixed OT pollen, many OTs are pollen sterile) and I have also used their pollen on other OTs and orientals. And the pods are swelling.
