I would have to say organic mix made with local ammendment , this whats important because if you use ammendments too far out of your range they will be really expensivemade my mix consisted of canola meal,langbenight , Alfalafa, bat guano , kelp and couple more....... I can give you a a calculater i made so you can make your own mix, made a costom fertiler calc so i can costomize npk values