The reason is so many chems in Super Thrive are not found in other nutes is that Super Thrive is banned to be used on consumable agricultural crops. It can only be used on ornamentals. This is because it is some toxic ass shit. Otherwise why would the USDA not allow it on consumables? I recommend only using nutes that have been approved for use on consumables, otherwise your just screwing yourself and your friends in the end with a product that will give them cancer. I am only on my first personal use, medical grow now, but that seems to be logical. I asked a GS-12 inspector for the USDA about this and he said that I should avoid any meds grown with non approved nutes. Do what you will to herb you smoke, but you might want to let others who smoke it know beforehand. I turned down some nice looking meds tonight from a friend who I watched grow, and has grown for years. I see him using Clonex, and Superthrive, both non approved poisons that scared me. Can't believe I turned down some free butter.
Speaking of which yikes on the butter if weird stuff was foliar sprayed, you would be getting every last bit sprayed on the leafs in your butter!