EDIBLE gardens are making a comeback as the cost of food skyrockets. This week, four different stories feature edible gardening. Host Jamie Durie visits COPIA, the American Center for Food and Wine. There, he tours their extensive vegetable gardens and orchards to learn about the COPIA philosophy and especially the innovative beds that feature herbs, ornamentals and edibles together. Gardening correspondent Paul Epsom visits an herb nursery, where he learns about unique selections. This week's "Homegrown" segment shares a technique that will teach viewers how to dry in-season produce for use throughout the winter. Then, Jamie learns about the benefits of compost tea in the garden.