anyone can participate in the seed run co-op as long as the strain you are reproducing is no longer available for sale. you can use your own seed stock, or we have a system for requesting strains from other members.
here is a link to the strains that people have offered to donate. if you are interested in growing one of these, just contact the member who offered the seeds.
and check out the co-op subcategory to see other seed run threads, and co-op rules.