GMO S1 is known for its unique genetic heritage and potent effects. This strain is a cross between GMO (Chemdawg x Tres Dawg) and a rare Afghani landrace strain, and is considered to be one of the most unique and potent strains available. In terms of its history, GMO S1 is a relatively new strain that is believed to have been first bred by the seed bank, Humboldt Seed Company. Its parent strains, GMO and the Afghani landrace, are both well-known and highly regarded, making GMO S1 a popular choice for those who are looking for a powerful strain. The effects of GMO S1 are often described as intense and well-rounded, offering a potent head high that is paired with a relaxing and calming body high. Many users report feeling euphoric and energetic after using GMO S1, with a boost of creativity and a clear head.