Louisiana Blue Flag Iris Live Pond Plant - Hardy Aquatic Marginal with Indigo Flowers

Louisiana Blue Flag Iris is a striking aquatic marginal prized for its rich indigo-blue flowers and upright, sword-like foliage. This native iris thrives at the water's edge, making it an excellent choice for pond borders, bog gardens, rain gardens, and other consistently moist landscape areas. Its bold color and architectural form add year-round structure and seasonal beauty to water features.

In spring and early summer, flowering stems rise above the foliage, bearing several violet-blue blooms that attract pollinators and create a lovely contrast against green leaves and reflective water. The plant naturalizes well in suitable conditions and returns reliably in cold climates, offering a low-maintenance option for gardeners who want dependable color near ponds and streams.

Plant Features

• Deep indigo-blue flowers with subtle yellow and white markings
• Upright, sword-shaped green foliage that remains attractive through the season
• Ideal for pond margins, bog gardens, rain gardens, and water-wise plantings
• Attracts bees and other pollinators during the bloom period
• Hardy, clump-forming perennial that naturalizes in moist sites

Growing Information

• Botanical Name: Iris hexagona
• Plant Type: Herbaceous perennial aquatic marginal
• Sunlight: Full sun to partial shade
• Soil: Consistently moist to wet soil; tolerates shallow standing water
• Water Requirements: High; keep soil wet or place at pond edge
• Growth Habit: Clump-forming with upright foliage
• Bloom Season: Late spring to early summer
• Mature Height: Typically 2 to 3 feet
• Spacing: 18 to 24 inches apart

Planting & Care

Plant Louisiana Blue Flag Iris in moist, rich soil at the edge of a pond, stream, or bog garden, setting the crown slightly above the water line so foliage stays above the surface. It also grows well in consistently wet garden beds or rain gardens that receive regular moisture. Water regularly during establishment and keep the soil evenly moist thereafter; established plants tolerate shallow standing water but should not be submerged too deeply.

Remove spent flower stems to encourage tidy growth, and cut back old foliage in late winter or early spring before new growth emerges. Divide crowded clumps every few years to maintain vigor and flower production. This iris is generally pest and disease resistant when grown in the right conditions.

What's Included

One Louisiana Blue Flag Iris live pond plant.