Im was on about salvia divinorum (in the sage family), personally I wouldnt take the concentrated form as the psychoactive substance it contains is quite potent, smoking the dried leaves of the plant allows you to know when to stop and how much you are taking, but commercialisation and the demand for a 'hard' legal drug has ended up with all this concentrate stuff. yes I suppose some garden centers will spray it, so you could get it else where, but thats no different from any other drug, it all comes from plants Its quite simple to grow/process it, Just stick it inside in a jar with rich soil, plenty of water and wait till the leaves fall off then dry them. far easier than cannabis as that needs to be treated/cured.