Exotic Seed has been working with the Sir Jack clones since around the year 2000 and such was the enjoyment that Exotic created this "S1" version which is obtained by crossing the plant with itself to lock-in its special character. It was originally derived from Sensi Seeds Jack Herer and is 70% sativa. It produces a sturdy plant all the better to support its large and heavy flowering buds. The resin on this has to be seen to be believed and it has established a reputation for making great "Ice-O-Lator" hash. One potential problem when growing plants with large, dense flowering clusters is the appearance of Botrytis Cinerea (grey mould) and it is therefore strongly recommended to keep a close eye on indoor humidity during the last third of the 9 weeks flowering period. It produces very good yields at between 550 gr - 600 gr/m2 indoors. The taste of Sir Jack is very strongly reminiscent of lemons with notes of incense aroma. The effect has an uplifting quality which is very powerful and which evolves into a more physical, indica stone but one which is not at all "couch-lock" in nature. Not recommended for beginners!