We can't help but think of Thanksgiving when mention is made of sage plants. What would stuffing be without sage? But as Marie Iannotti observes, they can also be useful in landscape design. "While a sage plant is in its prime, it makes an attractive addition to both herb gardens and ornamental borders. The purple, golden and tri-color varieties work especially well as edgers...." Learn more about sage plants in this article from About's Gardening Guide.