Miracle Grow sucks balls in my opinion!! Moisture Control, Organic Potting, Organic Garden.... I had nothing but bad experiences with these soils! Now I use Scott's. MG if using organic potting or organic garden soil will not make your plants "toxic" as you say. They will become "toxic" if you add nutes or ferts that are chemical and not "all-natural". The toxic taste that you get after harvesting is because you or whoever grew em didnt flush the soil properly the last 2 - 3 weeks of the plants life before harvest. Harsh taste and smoke can also be due to an improper curing routine.