Other contributors have said "What are the main nutrients in potting soil?" is the same question as "What nutrients are in potting soil?" If you believe that these are not asking the same thing and should be answered differently, click here
yes regular soil has more nutrients because of worms and how their slime helps the soil stay moisturised and grow more nutrients but potting soil gives plants more nutrients to help them grow faster....
I am very sorry. I hate having to tell people this. Well, here goes: I am sorry to tell you that you cannot grow soil. No matter what kind of potting soil you try to use.