|This second crop of cabbage didn't mature before the first frost.|
I must confess, I'm a little nervous writing this post because seed selection has become such a hot button issue and people are very passionate (and vocal) about the subject. There is also a LOT of misinformation out there, especially on the internet, concerning seeds so I encourage you to do your own research on this topic and stick to educational sites, especially university extensions. Look for URLs that end with .edu. You will find quality information that will allow you to make your own judgements.