In this episode of Growing Wisdom Dave uses mulch to prepare his soil for the long winter. Using mulch is a great way to keep plants healthy through the colder winter months. Mulch keeps moisture in, helps prevent frost heaves and keeps weeds out. Mulch can be placed around plants any time of the year but early spring or late fall are the easiest times to do this chore. I make my own mulch by grinding up leaves and twigs from around the yard.