Genetics: You can't go wrong with a mix of White Widow and Jack Herer. Flavor & Aroma: It has a pungent smell filled with citrus and tastes earthy but not too heavy, much like a haze or a tropical plant. Effects: The good vibrations of Jack Herer tangle with the cheerful and creative flow of White Widow. Medicinal Uses: This sativa can be used for fatigue, headaches, and depression. Potency: Jacky White has a THC potency level of 18%. Grow Info: This strain grows in an average of 9 weeks and produces a great yield.