Does plant magic bloom organic pk 4/8 have sulphur included ?

p/k/s are all different elements, so no.. "pk" nutirents don't have to have S at all. P doesn't have to go with K either. you don't have to use "cal-mag" either... there are lots of options out there that all take you to the same place - a proper diet.

If it has a guarnateed analysis label, it's on the label if it's in the product.

Hi bud. Not necessarily. It may come in their 'grow' formula. And the company might be under the impression, if you use their Bloom you are using their Grow as well.