Gorilla Glue #4 is a very amazingstrain of cannabis, mainly grown in Colorado. The genetic makeup is a mix of Chocolate Diesel with Sour Diesel. The smell of diesel is stronghowever the taste is similar to coffee that has gone stale. The odor is extremely strong, one of the strongest strains. This is why it is in the main grown indoors. The THC level is about 25-28%. This marijuana plant is lightgreen in color.