The trait common to all Jack Herer phenotypes is a dazzling double-edged potency - a stratospheric cerebral high underpinned by a breathtaking body-buzz with seismic power. Smokers should be prepared to feel the earth shake beneath their feet - which can be a very pleasant feeling when your head is firmly in the clouds.
Three of Jack's four main phenotypes are heavily Sativa-influenced while the fourth has a growth pattern leaning towards Indica - fast-flowering and relatively compact with a dense, expansive, rounded bud structure that's suited to cash-cropping. Jack's Sativa phenotypes can also produce a good per-metre or per-plant yield when cultivated skilfully, though it is rare for these crops to be sold commercially. Most growers who have watched their succulent, super-sized calyxes swell and mature will be hesitant to sell such buds, and the best Jack Herer is often passed around a select circle of friends - an example of one of those things that money just can't buy.