Miracle Grow is a chemical fertilizer. Because of this, a lot of people dislike it or any chem fert. Organic or nothing! Is easier to burn a plant by the inexperienced grower with chems. Also they are supposed to create salts in the soil and are hard to flush, sometimes creating all kinds of little (or major) problems. BUT...I have seen photos and read grow journals of people that use chem ferts and the yields they get and quality of harvest rivals even the best organic growers. So in a nutshell, it's all in your expertise and knowledge of the products you use. Don't let anyone BS you that they won't work as they will. Just not as easy. And it's all about easy. Simple is best. Listen to Mand!