The Chem 4 is a marijuana seed clone that was found from seeds started in 2006 from the original seed stock chemdog sent Joebrand. Joebrand stated the seeds chem sent him and out of them there was chem 1,2,3,4. The Chem 4 is what Joebrand dubbed the Reunion pheno as it reminded him most of the original dogweed from crested butte. I crossed this to my SFV OGK F4 male, says The Cali Connection breeder. Chem 4 OG is a High Times Cannabis Cup Winner from 2011 and excellent for medical purposes. Don´t miss this one!