Justagalwithchicks
Songster
I always use plain sterile seed starting soil. Use the boiling water method then mix in worm castings. I fertilize will fish emulsion and bottom water. My seedlings seem pretty happy with that. So many soils now are contaminated with glysophate and miracle gro and the like have senthetic fertilizers . If you have miracle grow and don't want to waste it you could use it on houseplants.Its loaded with pfas (forever chemicals that hurt your soil). Along with some brands of organic fertilizers listed also that tested high with pfas. I've always used miracle grow when I've potted up my seedlings, but mix my own soil for beds and pots. I didn't know better but will change that practice in the future.