Genetics: As it sounds, BK is a mix of Afghani Kush and Blackberry strains. Flavor & Aroma: The cross of strains listed above gives this one a strong hash type smell and texture accompanied by a sweet, berry element as well. Effects: The list of effects associated with BK are as follows: strong head and body highs come in waves as splashes of euphoria soak the soul in hash and blackberry aromas. It is known to pack a bit of a sandman wallop though, so do be careful to not smoke too much unless its time for "night night". Medicinal Uses: BK has been used to treat many mental ailments such as depression, anxiety, stress, insomnia, and even heartbreak. Potency: BK is a good pack leader as the THC levels creep up around 22% and CBD has come in at just under .4%. Grow Info: Flowers at 7 weeks with low yield.