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Description
Iris versicolor ~ Northern Blue Flag Iris, Harlequin Blue FlagNorthern Blue Flag Iris is a marginal deciduous perennial with a clumping habit. The long blue green sword like foliage is erect and lightly arched. Long sturdy stalks grow from the center of the plant and are topped with soft bluish purple flowers with deep purple veining and a central yellow splotch surrounded by a white zone in summer, attracting bees. Grows best in rich, slightly acidic, moist to wet water retentive soils. Iris versicolor is
Northern Blue Flag Iris is a marginal deciduous perennial with a clumping habit. The long blue-green sword-like foliage is erect and lightly arched. Long sturdy stalks grow from the center of the plant and are topped with soft bluish-purple flowers with deep purple veining and a central yellow splotch surrounded by a white zone in summer, attracting bees. Grows best in rich, slightly acidic, moist to wet water-retentive soils.
Iris versicolor is pollinated by various types of bees but is still a good food source for butterflies and highly attractive to hummingbirds.
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Type: |
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Origins: |
Northeast US and Canada |
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Height: |
2' - 2.5' |
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Spread: |
2’ - 2.5' |
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Spacing: |
2’ |
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USDA Hardiness Zone: |
3 - 9 |
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Culture: |
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Bloom Color: |
Purple |
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Season of Interest: |
MAINTENANCE NEEDS: Medium Maintenance. Water regularly, then occasionally once established. Can cut back any dying foliage after flowering. In winter, it is intolerant of wet or boggy soils- the roots may rot- move to dryer ground for fall and winter.
LANDSCAPE USES: Accents or Group Plantings, Borders, Woodland Gardens, Water Gardens, Ponds and Streams, Naturalized Areas, Foundation Plantings, and Containers.
COMPANION PLANTS: Joe Pye Weed, Spiderwort, Turtlehead
IMAGES: Photo by Bob Gutowski, Iris versicolor, (2) Photo by John Munt, blue-flag-iris, (3) Jean-Pierre Guillet, Iris versicolor au parc national du Bic, CC BY-SA 4.0, (4) Ryan Hodnett, Northern Blue Flag (Iris versicolor) - Algonquin Provincial Park, Ontario, CC BY-SA 4.0, (5) PantaRhei, Feldberg (Schwarzwald) - Naturschutzgebiet Feldberg (Black Forest) - Bild 3 Feldsee, CC BY-SA 4.0
*As plants have ranges in appearance they may not appear as the images shown.
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