I’ve been noticing for the past few years that the quality of commercial potting soils has gone way down. This is the case with every brand I have tired, including Home Depot’s Vigoro, Lowes’ Sta-Green, Walmart’s Expert Gardener and Kellogg Garden Organics. The problem with these potting soils (especially Kellogg) is that they are composed of a large amount of non-composted wood chips. As a result, these wood chips rob much-needed nitrogen from the plants “grown” in these potting mixes and my plants always suffer as a result.
