Well its been almost 20 years since i collected these seeds in Jamaica, and today im opening them and going to try to germinate them. Not sure if they will crack but may as well give it a shot ( also have 2 seeds from the famous bc hashplant. Fingers crossed as its also 17 years old.. http://www.growweedeasy.com/how-to-germinate-marijuana-seeds
Found some 20 year old seeds
