Best Soil for Container
I'm an apartment dweller, who's only choice is to grow my veggies, herbs and someday fruits in the containers. I only grow edible things. I'm curious as to which type of potting mix would be best to use in the containers for me.
Option 1. Purchasing an Organic Potting mix from the store, (which is what I've been doing so far)
Option 2. Use soil from other people's gardens. Either top soil or stuff from backyard remodeling). Or soil from lower levels from digs that precede construction.
So far I've been using Organic Potting mixes from local companies here in Los Angeles, that have no bat guano or blood meals in them. If you recommend Option 1 is there an actual brand that you feel would work best? And if you recommend Option 2 then would the Top or Bottom soil work best? Also, would option 2 need some other materal(s) mixed into it?
If this has already been covered a link would work for me.