As noted in my previous replies – linked above, and the text posted from oaksterdam uni by @Majiktoker, and also here is a selected relevant quote from the above links to my comments before:
And so I’d have to say, it might help the buds continue to swell because of the potassium, but if it is added to anything other than a healthy microbial filled soil like medium, it isn’t very useful, except maybe as a foliar spray, as mentioned by oaksterdam uni.
~MacG