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Iris versicolor, commonly known as northern blue flag, is a rhizomatous perennial prized for its showy, violet-blue flowers with yellow and white markings that bloom in late spring to early summer, adding color and elegance to pond margins, water gardens, or moist meadows.

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Iris versicolor

Common Name: Northern blue flag

Type: Perennial

Family: Iridaceae

Native Range: North America

Zone: 3 to 9

Height: 2 to 3 feet

Spread: 1 to 2 feet

Bloom Time: May to June

Bloom Description: Violet-blue with yellow and white markings

Sun: Full sun to part shade

Water: Medium to wet

Maintenance: Low

Suggested Use: Pond margin, water garden, moist meadow

Attracts: Bees, butterflies

Tolerate: Deer, wet soil

Iris Versicolor

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Blue Flag Iris has masses of beautiful blue flag-like flowers with yellow falls at the ends of the stems in mid spring, which are most effective when planted in groupings. The flowers are excellent for cutting. Its sword-like leaves remain green in color throughout the season.

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