Miracle-Gro Shake n Feed

Hey, I want to know if this stuff works: http://www.scotts.com/smg/catalog/productTemplate.jsp?proId=prod70290&itemId=cat70046

I just bought it and I can't return it considering I already used it on my tomatoes. Will it harm my cannabis even if I be careful not to over-do it?

No responses with all these views? What bad could a dropping a few pellets do after the vegetative, I mean there are literary thousands of pellets in this container, I doubt it would burn the weed?