Many annual tropical bog plants will winter over as house plants and many are hardy to zone 7. Annual bog plants add shape, color and texture to the water garden. Adding tropical marginal plants at the edge of the water garden, waterfall or stream bed gives your pond a more natural appearance with the lushness of the tropics. Tropical marginal plants such as Cannas, Spider Lilies, Rain Lilies and Bog Lilies can simply be stored in peat, in a cool dark place for the winter in colder zones. ARIZONA, CALIFORNIA AND PUERTO RICO CUSTOMERS NOTE: OUR MARGINAL BOG PLANTS ARE NOT AVAILABLE TO SHIP TO ARIZONA, CALIFORNIA AND PUERTO RICO DUE TO STATE AGRICULTURAL LAWS NOT PERMITTING SHIPPING POTTED PLANTS WITH SOIL INTO THE STATE.