louisiana iris, slidell, lousiana. this is the state wildflower of louisiana, and this particular species can grow up to six feet tall. they grow natively in freshwater marshes, swamps, and wetlands. there aren’t many of these flowers left, and our tour guide explained that they only bloom for a couple of weeks in the spring. wetlands are crucial for carbon storage, fisheries habitat, and protection from floods. although louisiana has 40% of the wetlands in the US, they also represent 80% of its losses.