Get some kelp, you should be able to find it local as an espoma product. You'll also find it at the feed store as thorvin. Also neem and karanja(mailorder). The oils and or seed cake. These along with basalt will turn almost any "dirt" into high end potting mix. These products build up the plants immune system, defend against pests, and are incredible sources of micro nutrients.
To keep it bodhi my super silver temples are straight grapefruit haze and the genius thai are all lemon candy frankincense. Only 3 weeks old.