Instruct: Classify the given Amazon review as either positive or negative.
Query: Mulch + Potting Soil = Miracle Grow Organic Potting Soil :(

I purchase LOTS of potting soil. Miracle grow's standard potting soil is a really nice product. I was at the supermarket and just needed a little potting soil this time. Normally I buy 3 or 4 of the biggest Costco sized bags but this time I just go a normal sized organic bag. This is not good potting soil. It has a really high percentage of shredded wood in it. Wood eats nitrogen from the soil as it composts to become soil. This potting soil will sacrifice my plants while it transforms into GARDEN SOIL (too much compost and not light enough to be potting soil even after all the wood degrades). Stay away from this soil and go for the regular potting soil or if you want actually "natural" potting soil you can blend your own.