I was using some so called 'potting soil' from a farm methane project in Shelburne VT but it was absolutely the WORST...no water retention capability so all the water went right through and came out coffee brown. If you let the plants dry out at all the soil turned to brittle crunchy crap. Miracle grow definitely is worth the extra cost. I am on my third bag already as I have had to repot every plant in the house to get rid of the crappy stuff. I love it's ability to hold moisture . I agree with another reviewer that i'm not gonna eat the damned spider plants that I enjoy propagating in the winter so it does not have to be super organic for me.I've tried to do my bit for the environment but it turned out costing me a ton of wasted money. Since using Miracle Grow, I too have had a problem with these little black flies all over the house. They get right in your face anfd are very hard to kill so i have had to hang fly papers which are now festooned with little black bugs.I did not put excellent for this reason.