It is a form of Silica I am told, derived from the paint used for white lining roads. It is used to disguise the fact that the bud has been "Khiffed" or screened for hash. Growing your own is so much better.No worries m8 i live in england, kent south east area.The bud round this way is shit at the moment it seems to be sprayed with sand or something do you have trouble over their with this & have you got any idea what this s**t is.
Can't see how it can be good. If you are getting gear together, check this out, I have just bought some full spectrum units (4) to reduce power consumption "ledgrowlights" they are a UK company.Cheers for that m8, Do you know of anybody that has been ill due to this as around here ther have been people taken in to Hospital with pains to the chest & all sorts things, your right i think i would be better of growing it myself i think.