Big Jack is a hybrid with a soaring haze high mixed with thick resin production of the heaviest yielding indicas. Big Jack is composed of the strain named in honour of the late great cannabis crusader, Jack Herer, and a heavy yielding Big Bud variety. The CBD-rich genes of the latter allow for a more comfortable body high, at the same time retaining the mind altering effects of Jack Herer's sativa properties.

As a result, a strong mental high is present with a tendency to lean towards a physical effect that can make your body feel pleasantly heavy.