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PLANT BASE
Iris versicolor
Blue flag iris
Height
Spread
Growth
habit
​
3-9
2-2.5'
2-2.5'
Form Lifecycle Hardiness zone*
Upright, Clumping
Flower
Perennial
Harlequin Blue Flag, Northern Blue Flag, Large Blue Iris
APPEARANCE
Bloom time
Bloom color
​
May-June
Violet/ pinkish
USE FOR
Seasonal interest
ENVIRONMENT
Terminal clusters
Light
​
Water
Soil
Soil pH
Loam
Acidic to average
Soil Preference
Wet, hummusy
ENVIRONMENTAL TOLERANCE
Wet soil
HABITAT & NATIVE RANGE
Wetlands, swamps, wet meadows
Virginia to Minnesota and northward to Canada
BROWSE TOLERANCE
Wet soil
Tolerance to browse by animals typically happens once plants are established. Young plants may still be quite susceptible.
SUGGESTED MAINTENANCE & COMMON PROBLEMS
Divide every 2-3 years, don't add thick mulch as will cause rot
COMPANION PLANTS
New York aster,Tussock sedge,American blue vervain,Soft rush,White turtlehead
COMPANION TREES & SHRUBS
NOTES
Rhizome is poisonous to livestock
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