I've dumped out my ziplocks of ungerminated seeds and found that there are no sound seeds in them. There were some "wings" but no seed bumps in the middle of them. All but one species of South African gladiolus had germinated by 5 months, except for G. liliaceus which took one year. Therefore, I won't keep South African gladiolus seeds beyond 5 months without checking to see if there are still seeds in the packet. I will list the species that have not germinated for me. Perhaps someone will know if they share a common need that I did not provide. debilis, papilio (2 accessions), trichonemifolius Diane