The D.C. Seed Exchange

Welcome to the D.C. Seed Exchange! We are a small seed bank focused on the highest quality genetics. Our mission is to build a virtual trading space that features genetics from the best breeders in North America as well as highlighting local talent from the Mid-Atlantic region. Below is a complete list of our vendors offering a variety of regular, feminized and auto-flowering seeds.

We are here to help, if you have any questions please don't hesitate to contact us!


Mass Auto Flowers

Mass Auto Flowers • artisan crafted • potent • vigorous • terpene rich • unique style • Limited small batch •

Mass Auto is a collaborative effort with a medicinal grow facility in order to breed the best possible feminized autoflowering hybrids out of an extremely large selection from the best gene pools around. Our small batch auto strains are bred and tested like no other, in a 1:1 parent ratio where every combination can be thoroughly tested and proven. This reduces diversity and allows us to lock in traits. Our focus is an autoflower that will impress a photoperiod grower with quality flower that smokes well, has a strong effect, smells and tastes great. Our breeding experience with the facility was a one time opportunity, and since we have finished our strains may only available one time each. We hope you enjoy the fruits of our labor!

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