Flash Back is a stabilized Sativa-dominant hybrid strain created by The Sweet Seeds breeders by crossing two well known genetic lines. The mother of Flash Back is a female Flo from Dutch Passion. For the father they used the White Widow, picking one for its strong scent of fruit and resin production. Flash Back inherited both of these traits, smelling of strawberries the buds are covered in trichomes. This mostly Sativa strain produces a powerful euphoria and cerebral effect that can easily cause one to lose track of the time as they get lost in fits of giggling. The cerebral effects of this strain is also useful for relieving anxiety, depression and other mood-related disorders.

This strain has also been in-bred for more stability and released as Flash Back #2 by Sweet Seeds. It can be grown indoors if the grower has enough space, where it can produce between 400 and 600 grams per square meter. If grown outside, Flash Back may produce anywhere between 350 and 700 grams per plant. The strain needs eight to nine weeks to finish flowering.

Another strain also goes by Flashback and was created by Homegrown Fantaseeds, but there is very little information on that particular version.