Hey all, I have been searching this forum as well as google for the best realitively cheap soil mixes for outdoor grows in the grown. The soil at my location is mediocre but it seems to be a bit dry and lacking nutrients. I do not live in a particularly hot climate and the grow location receives alot of direct sung light per day. I am growing around 25plants(not for commercial reasons, don't really want to get into it) and I know that the holes will take alot of soil. There is a relatively goofd soil sold around me called kelloggs patio plus which is 6$ for 1.5 cu but I was wondering what I should add to that? Peat, coco coir, castings, perlite ect? Again I am growing to have to fill about 25 holes so cost is vital!! Thank you all for you help!!