Louisiana Irises are large, vigorous plants. They need plenty of room (3' or more for established clumps). The species is a marsh plant, so they love water, humusy, acidic soils, manure, and lots of mulch. They are tolerant of regular garden conditions, but also adapt to tropical climates. Flowers are particularly vibrant in color. Blooms in June in our area.
DEB (Debaillon Medal): top award in this class.