Iris versicolor, commonly known as the blue flag iris or harlequin blueflag, is a striking native iris species found across eastern North America. Foliage: This iris forms clumps of stiff, sword-shaped leaves that typically reach 12-24 inches tall. Flowers: The showy, three-petaled flowers of Iris versicolor bloom in late spring to early summer. The upright "standards" and hanging "falls" come in various shades of blue, purple, and violet, often with white or yellow accents. Growth Habit: Blue flag iris is a rhizomatous perennial that spreads gradually over time to form dense colonies. Mature clumps can reach 18-36 inches tall and wide. Cultural Needs: This species prefers full sun to partial shade and consistently moist, acidic to neutral soils. It can tolerate periods of standing water, making it well-suited for wetland and bog settings. Native Habitat: Iris versicolor is native to marshes, streambanks, and other wet habitats across eastern Canada and the northeastern United States. Landscape Use: Blue flag iris is an excellent choice for rain gardens, pond/stream edges, bog gardens, and other moisture-retentive areas. It also works well in perennial borders and naturalized plantings. Wildlife Value: The showy flowers of Iris versicolor attract pollinators like bees and butterflies. The foliage and seeds also provide food and shelter for various wildlife species. Overall, Iris versicolor is a beautiful and adaptable native iris that thrives in consistently moist garden conditions. Its vibrant flowers and tolerance for wet soils make it a valuable addition to many landscape designs.
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