Quote Originally Posted by Rusty Trichome
From personal experience, when using it for transplanting seedlings, you can and will overdose them if you add nutes for the first month or so. But once you get used to it, it works fine. During the winter, for me, t'was better to use the regular Miracle Grow. (not the moisture control formula) Careful with overwatering, as it is designed to hold moisture longer than a "normal" potting mix. (allow soil to get almost dry between waterings)
Having said that...there soils that are easier to use.

Later, when transplanting from a 1 gallon to a three or five gallon (filled with MG)...wait about two or three weeks before adding nutes.
I've seen a lot of case of seedlings dying because of Miracle Grow soil even with no added nutriments, I personally think, you should try to use any non pre-fertilized soil for seedlings once they got 4-5 nodes you can transplant them into the other medium.