Buy Jack Frost Strain UK, Jack Frost Weed Strain is a potent THC 20% CBD 1% hybrid marijuana strain made by crossing White Widow with Northern Lights #5. This festive strain will make you feel happy, creative and energized. Jack Frost has a flavor profile featuring sweet and woody scents with just a hint of lemon. Medical marijuana patients choose this strain to help relieve symptoms associated with PTSD, stress, and depression.