One of my biggest issues with bought plants is not knowing what they are growing in. Im trying to educate myself as much as possible. So I'll take any info on fertilizers and or store bought plants.. What are the little white things in the dirt, and are they harmful? How long does fertilizer last and can I feed him new shoots/leaves from the store bought dirt. Is all miracle grow safe? I found a grape ivy that is perfect for the encloser, the green house said they use miracle grow, do I need to ask specifically what kind?