Profusion zinnia seed not germinating
I saved seed from two colors of Profusion zinnias this year for the first time. I stored them in white envelopes in the refrigerator over the winter. I have sown two flats over the past three weeks and I am getting very very poor germination rates. So poor, in fact, that I just ordered seed from a seed company. Any idea what might have gone wrong?
FYI I sowed them into six packs in sweat boxes. Some inside under lights. Some outside. The outside ones have done better, but not by much. I have grown these plants before from seed with great results. I am stumped.