Blackjack was produced by crossing Black Domina, the clone-only plant from the Pacific North West near Seattle, with a male Jock Horror. The resin-production on this plant has to be seen to be believed.

Blackjack is a medium-sized indica-sativa hybrid strain that can be a little tricky to grow successfully and for that reason it is not recommended as a strain for novice growers. With a little experience though it can produce yields of 400 – 500 gr/m² can be harvested in 9 – 11 weeks of flowering. It is ideal grown in a Sea of Green system. Blackjack develops hard buds whose calyxes swell to become as big as grapes and they are simply encrusted with resin crystals.

THC production is very high as is the level of CBD. The smoke is thick, rich and smooth with a pungent, earthy flavour and its effect produces a happy feeling that is both relaxing and extremely long-lasting. This is a medical marijuana strain that is very highly recommended for stress, depression and pain relief.