I've always been taught to store seeds in an airtight container in my refrigerator so my guess would be yes.......they were stored incorrectly. Better luck with the next set. I've kept some in the fridge for over a year and they popped and grew fine.
Weedhound Reviewed by Weedhound on . HELP!!!!!!!!Why do my seeds turn black??? I purchased seeds (feminized) from uk site at first np sprouting them now that a few well several months have passed 2 of the seeds have gone black upon attempting to sprout them. I have never had such a time sprouting seeds as these last to and still no tap root just gone black.I stored them the way they arrived didnt change anything they were in a lil plastic ziplock in a cd case behind a cd.They sat alll summer and i just tried to start them fer a mama and nuttin but Black seed. The Rating: 5