Louisiana Iris (Iris ser. Hexagonae)

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Louisiana iris (Iris ser. Hexagonae) is a captivating group of iris species native to the southeastern United States, particularly Louisiana and its surrounding regions. These jewel-toned beauties are known for their diverse range of colors and unique foliage. They are popular ornamental plants for gardens, ponds, and water features.

Botanical Name
Iris ser. Hexagonae
Family
Iridaceae
Height
The flower stems reach 2 to 3 feet (61-91 cm) in height.
Foliage
Attractive, sword-like leaves persist in warmer regions, adding architectural interest.
Flower Colors
Come in rust, blue, purple, yellow, pink, and white, often in striking combinations.
Blooming Season
Flowers appear in early spring as soil and ambient temperatures warm up.
Soil
Prefer rich, moist soil with a pH of 6.5 or lower.
Sun Exposure
Full sun to partial shade.
Moisture
Keep the rhizomes moist or even boggy.
Climate
Temperate to warm.
Hardiness Zones
6 to 10
Season Features
Flowers in early spring
Special Features
Attractive to hummingbirds and butterflies
  • Provide habitat and food for various wildlife, including insects, birds, and amphibians.
  • Enhance garden aesthetics with their vibrant colors and architectural foliage.
  • While not highly toxic, it’s advisable to handle all irises with care.
  • Grow in clumps and are often referred to as water irises or American swamp irises.
  • Naturally in ditches, bogs, roadsides, and other moist or damp soils.
  • As landscape plants, they thrive near ponds, in aquatic gardens, and containers.
  • Propagate by division of rhizomes in late summer or fall.
  • Watch for aphids, thrips, iris borers, snails, slugs, rot, rust, and leaf spot.

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