outdoor soil isnt sterilized and can contain bugs and insects. you just dont want to use that crap and infest your op. im sure there are other reasons too but thats the main one i remember.
cigarettes42 Reviewed by cigarettes42 on . indoor, outdoor soil question what determines which soil is for outdoors and which is for indoors? Most brands of soil have potting soil for indoors and soil for outdoors. Is there any reason why I shouldn't use an outdoor soil indoors? The reason I ask is that i have been looking for miracle grow potting mix 21-7-14 which I can't find anywhere (even the internet) and the closest mix to that is the miracle grow outdoor soil with 15-5-10 Which I would like to try. If you are going to post about miracle grow burning plants Rating: 5