As far as soils are concerned. Many potting soils now come with mycorrhizal fungi and bacteria that help plants grow.
Scientists now know about the importance of mycorrhizal fungi and certain bacteria to a plant's health and well being. You can do your own research on-line if you like.
But the potting soils are pretty much everywhere now. Armstrong Nurseries have some and maybe other local nurseries around your area will have them too.
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