GMO stands for “genetically modified organism” and means that the seed has been changed in a lab. GMO seeds are often created to produce plants with certain characteristics. For a truly organic harvest, you have to start at the source with non-GMO, untreated seeds.
Non-GMO seeds are bred through natural pollination. These seeds can either be hybrid or open-pollinated. Hybrid seeds are the result of cross-pollination. Open-pollinated seeds "breed true," meaning they are nearly identical to the parent seed. Both types of seeds can be created naturally or manually, unlike GMO-seeds, which have to be created in a lab.