Blue Flag Iris
| Iris versicolor | USDA Zone: 2-9 |
This is a wild flower of Eastern North America, and one of the few native iris species in garden cultivation. Although happiest at the waterside, or actually growing in shallow water, plants will also perform well under average border conditions. Clumps of tall sword-like leaves are produced, bearing medium-sized flowers with bright violet-blue, ruffled petals. Might actually begin to naturalize in waterside areas that are to its liking. In smaller water features, consider growing this in large pots submerged to the rim. Clumps are easily divided in the autumn.
Common Name: Northern Blue Flag, Blue Flag
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Key Feature
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Light Needs | Landscape Uses |
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| More About Blue Flag Iris |
| Height: 36-48 inches |
Spread: 24-30 inches |
Flower Colour: Deep Blue |
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Grow in medium to wet soils in full sun to part shade. This iris may be grown in up to 2-4” of shallow standing water (muddy bottom or containers), or in moist shoreline soils or in constantly moist humusy soils of a border. Propagate by division after bloom. Wear gloves when dividing the rhizomes. After fall frost, plant leaves may be trimmed back to about 1” above the crown. Will naturalize to form colonies in the wild. |
