Miracle grow is supposed to suck for growing pot. But I do know people who have gotten away with it. The best fertilizer is organic.
yes i also have used miracle grow BUT, the soil was very good, i have used better ferts with shit soil with sucess, but mostly its miracle grow tomato food , then miracle grow bloom food when there bigger then fish emulsion for flower...works great on a budget...
I used miracle grow for vegitative and flowering, and i have a lovely lady. However if you can, organic is the best bet. Good Luck! - Vince
My grandad swore by MG for his tomatoes, and very good they were, too. But I am an organic grower. Besides that, I have never seen MG on sale here.
You have some who like it, and some who hate it. I have tried it in moderation and had great results, the key is to not over do it.