Many hardy iris plant varieties will grow well in moist bog areas. Louisiana Iris, Japanese Iris and some others grow best if soil is kept evenly moist with about a half inch of water above the soil line. We have a wide variety of aquatic iris plants available to add a beautiful display of color to your pond during the spring months. Iris bloom once a year usually April to June, and may need a year to establish before they begin blooming. OUR POTTED MARGINALS ARE NOT AVAILABLE TO SHIP TO CALIFORNIA Or ARIZONA.