Hello Noel, you have seen the plants growing in their natural habitat, why don't you replicate the same growing conditions instead of going the 15/15/15 route or what ever? Bend down and pick up a fistful of the dirt in which the plant is growing and sniff it. Then listen to the flavor and the aromas, I think you will find mostly plant(organic) litter. Organic because there have to be some dead bugs, etc. also in there.
Regards,
Masud.
