Preparing your herb garden for the coming winter can actually be done in late summer or early fall. In order to prepare your garden for winter, do not fertilize when you are within about one month of a first hard frost. Most of your annual herbs
To properly prepare your garden for winter, you may mulch and use cover crops to prevent soil from eroding from rain or snowmelt. In many cases, gardeners may also grow small patches of annual herbs between the perennial herbs in the garden. Perennials should be mulched during the winter. In most climates, except for the warmest ones found in the Southwest, such motions can provide insulation to the soil that will keep it warm during those winter months.