Jack Flash strain comes from the crossing of (Jack Herer x Super Skunk) x Haze. Jack Flash is typically an Indica dominant hybrid that you can medicate on anytime of the day. Jack Flash strain is good for patients dealing with pain, stress, and anxiety. Jack Flash Patients will find themselves happy and talkative with creative thoughts flowing. You can tend to get a little lazy due to the Indica content in this strain but most patients do not report knocking out on this strain. Growing Jack Flash Marijuana Has Medical Benefits.