yes this is misleading, not saying it wont grow good weed, but it isnt organic soil, its built up from natural components. It does buffer fairly well but ( inputs ) such as organic matter and water need to be balanced somewhat. In other words, they are saying you can make it a living soil if you add stuff. Well you can do that with common garden soil. Did they say plant clover? Alfalfa? Vetch? Worms? Probably not because they use top dressing to ammend the soil. And thats ok, so long as we treat it the way it was intended and not expect it to be full of life! You can grow some great weed in that, ive seen guys use supersoil grow huge plants! It is actually better for indoor than living soil in my mind. Because you can end up with some issues doing living soils indoors, at least that stuff you can fortify.