Hi, AMP..
After four years of successfull greenhouse grows using 50/50 coco/ perlite in 7 gal fabric pots and GH Trio nutes per GWE, I finally tried growing a couple plants in soil, in the 110°F metro Phoenix summer.
I dug down 18" x 5' diameter in a shaded area of an existing veggie garden. Broke up the dirt, added store bought planting soil, my own compost, coco, perlite, sand, kelp extract and granular, slow release 15-15-15 generic fertilizer. Added mychorrizae to root balls. Watered in each layer well with Miracle Gro. Sprinkled DE and coffee grounds around plants to deter pests. Covered soil bed with landscape cloth and two inches of lawn clippings. Put remay around plants under shade screen to protect from totally brutal sun.
After 5 weeks in ground, two 10", one gallon seedlings (Herbies Head Shop "Apple Betty" photos) are now 5' and 4' tall. Doing GREAT, no bugs, no heat damage.
Care is so easy. Simply water every four days or so.
Go with your organics. Years of veggie gardening and this new cannabis experience tell me to just put them into well prepared ground, protect them and they will GROW.