MULCH IS NOT A DECORATIVE ITEM, like carpeting or paint! If chosen carefully and applied properly, it’s the most important soil-building, plant-sustaining tool a gardener has. At this time of year, I’m asked a lot about mulch, but most of the questions make me a little nervous, because they center on the aesthetics only. It seemed a good moment for a friendly reminder about what mulch is (and isn’t), and how to use it, in the form of my Mulch FAQs.