Pak Choi Bok Choy White Stem Cabbage Seeds. 45 days. Chinese non-heading type. Loose spoon shaped leaves with thick white ribs. Tender, crisp and mild. Cold resistant. All of our vegetable seeds are either organic seeds or heirloom seeds, some call heirloom seeds heritage seeds. No chemicals or pesticides are used on our seeds. All seeds we carry are either for the current growing season or for the next growing season to come which is why our seeds have such a high germination rate and will last for years if stored properly. We do not sell old seeds. Our heirloom seeds are all gathered and packaged by hand so no weed seeds or anything other than what you ordered will be in your seed packets. We do not carry any GMO or altered seeds.