typically youll want to stay away from these miracle gro mixes. if you have no other options and its all thats around it will work for you but its not the best solution. they come pre fertilized and dont really match up with all of your needs. if you can, get the organic version of miracle gro.

the best and most cost effective way is to make your own organic mix. it comes out more flavourful. search around on here theres plenty of organic soil recipes