Create a bog garden by turning an unmanageable low area in the landscape into a bright, colorful garden filled with plants that like to have wet feet. Known as bog or marginal, these plants range in size from ground covers to trees. The same plants used to create a bog garden also work nicely around the perimeter of a Koi pond.
Arrowhead (Sagittaria latifolia) is a native of North America. Arrowhead will thrive in full sun to partial shade and in 6 inches of water. The plant grows to 24 inches tall, has arrow-shaped leaves and white flowers. Arrowhead is hardy in USDA zones 5 to 11. Double flowering arrowhead (Sagittaria latifolia "Flore Pleno") is also a native of North America and stays under 15 inches tall. It grows well in a bog or pond in water up to 3 inches deep. Care is otherwise the same as with arrowhead. Arrowhead "Flore Pleno" is hardy in USDA zones 3 to 11. Red-stemmed sagittaria (Sagittaria lancifolia "Ruminoides") reaches 4 feet tall with a 24-inch spread. It is a good bloomer, with many clusters of white blooms during the Summer. "Ruminoides" is hardy in USDA zones 8 to 11.
Bog Lily (Crinum)
Bog Lily (Crinum americanum) are popular pass-along plants in the Southern states. They are native to the state of Florida, where they are located in residential and commercial landscapes. This lily grows to between 2 and 3 feet tall, has long thick leaves and white summer and fall blooms. It likes to have wet feet and does well in water up to 2 inches deep. Bog lilies are hardy in USDA zones 8 to 11. Red bog lilies (Crinum menehune) grows to 24 inches tall and thrive in water up to 6 inches deep. These bog lilies have pink blooms. Care for red bog lilies is the same as with other bog lilies. Red bog lilies are hardy in USDA zones 8 to 11.
Aquatic Mint (Mentha aquatica) is a beautiful mint plant with fragrant, light blue to light purple blooms on 12-inch plants. Aquatic mint thrives with wet feet and will do well in water depths to 2 inches. It is hardy in USDA zones 5 to 11. Curly mint (Mentha aquatica var. crispa) is similar in height, bloom, growth habit and care as aquatic mint. Leaves of this mint plant are ruffled. This mint is hardy in USDA zones 5 to 11.
Black princess taro (Colocasia jensii) is a tropical plant that grows to 3 1/2 feet tall. Its large leaves are green with dark splotches. Colocasia jensii will thrive in full sun and up to 6 inches of water. In northern climates, store them indoors as with any tender bulb. Black princess taro is hardy in USDA zones 9 to 11. Black Magic Taro (Colocasia esculenta "Black Magic") is similar in height, growth habit and care as black princess taor. As the name suggests, leaf color of black magic taro is very dark. The color is more black-purple than black and makes it a good companion to other taro. It is hardy in USDA zones 9 to 11.