I used for 1/2 my grow a miracle grow organic potting soil. Then i threw in some extra perlite about 1-2 cups for each hole (btw 4 holes=1 bag of soil) and just a dab of general nute 10-10-10. Going to check on my plants on sat and suspectin they will be about 6-8 inches tall.

But it is true. Miracle grow soil is usually loaded with nutes for people who are use it for flowers. It is best to avoid miracle grow generally unless you know for SURE its organic.

Hope this helps a little,

Hawk.