The Louisiana Iris

What we typically refer to as the Louisiana iris actually consists of five species native to Louisiana and surrounding regions in the Southeastern United States. Iris brevicaulis, Iris fulva, Iris giganticaerulea, Iris hexagona and Iris nelsonii are known as the Louisiana irises. These five species participate in interbreeding which results in the variety of irises we grow today.

It is suggested to plant Louisiana iris between the months of August and September when they are dormant for optimal results. However, if you prefer to pick out the colors and types of flowers, it is best to wait until the flowers are in bloom to be sure of what you are planting. Garden cultivation and hybridizing have caused Louisiana iris to bloom in shades of blue, red, yellow, pink, brown, white, purple, and more. The wide range of colors and native quality make it an attractive addition to aquatic gardens and ordinary flower beds. Louisiana irises will grow best with as much direct sunlight as possible.

Within their native habitats, irises often grow along freshwater bayous and sloughs. This wetland vegetation has little tolerance for salt water. The Louisiana iris is at risk due to dredging through wetlands leading to saltwater intrusion. CWPPRA hydrologic restoration and freshwater diversion projects help regulate salinity and restore the natural hydrology of wetlands, ultimately preserving the iris as well as other native plants and animals. Learn more about how to #ProtectOurCoast and its native species at lacoast.gov.

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