Chem Dog #4, aka Chemdawg #4, is an indica-leaning strain that’s part of cannabis lore. The story goes that the original Chem Dog strain was sprouted by a Grateful Dead fan named Chemdog from seeds with Nepali and Thai genetics. The original four seeds were popped in 1991 — Chem Dog 91, Chem’s Sister, Chemdawg D, and an unknown male that was reportedly disposed of — and another four in 2006. Of the latter four, Chem Dog #4 was supposedly the one closest to the original and is, therefore, sometimes called the Reunion Pheno. 

The top reported aromas of Chem Dog #4 are pungent citrus, sweet earth, and pine. It’s said to taste similar with hints of fuel.