Fire OG, also known as "Fire OG Kush," is a marijuana strain made by crossing OG Kush and SFV OG Kush. This strain has an aroma similar to Lemon Pledge and has euphoric effects that are potent and long-lasting. Fire OG is one of the strongest OG strains, and is a fan favorite among consumers who have a high THC tolerance. Fire OG gets its name from the frosty red hairs that make the strain appear to look like it is on fire.