Grapefruit Durban is a sativa marijuana strain made by crossing Durban Poison and Grapefruit. The terpenes from Grapefruit make this strain smell like citrus with a taste that is both sweet and sour - just like a pink grapefruit. Smoking Grapefruit Durban will give you a cerebral, energetic and motivating high that can be felt throughout your entire body. Medical marijuana patients choose this strain to help fight fatigue.