I live in the north country and have never noticed a difference in germination by seasons, but I have too recently been having problems with dead seeds. I have ordered my seeds from Bonza for several years and have always gotten quality live seeds. My last order, which I placed on Black Friday, seems to have problems. 3 out of 5 have been fail to fires. I had 2 THC Bomb seeds and a DP Auto Night Queen fizzle, while a DP AutoUltimate and a Genofarm Purple Haze popped within 24 hours. I have been hearing some conversation that possibly the seeds are being X-rayed in the mail and this could be causing some problems. Sounds plausible. I think it is possible that both of the THC Bomb duds were out of the same lot and possibly the whole lot was bad. Who knows how long and in what condition these resellers hold their inventory. I keep my seeds sealed inside their tubes, tubes into plastic bag, plastic bag into a jar, and the jar into the crisper of the refrigerator. I have germinated seeds over two years old that were stored this way.