Iris virginica var. shrevei

Common name: Blue Flag Iris

Native plant

Blue Flag Iris is a fast growing, water-loving species.  Showy purple flowers with yellow streaks bloom from late spring to early summer.  Although each individual flower is short lived, a colony can bloom for as long as a month.  Because they are so fast growing, they benefit from divisions every 3-4 years.  If left alone, this plant frequently forms colonies, particularly in wet areas.  Although they can grow in part shade, they often will only bloom under full sun conditions.


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Price Level: 
Perennial- Standard
Sizing Options: 
Flat of 32 (plugs)
Flat of 18 (pints)
1 Gallon

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Plant Details

Plant type


Soil type

Moist Mesic, Wet

Light exposure

Full Sun, Partial Sun / Part Shade

Bloom period


Urban environment

Uncompacted Urban Soils, Road-side/Salt Tolerant, Yards that Flood


Floodplain, Moist Woods, Prairie Grasslands, Wetlands

Growth form

Colonizing / Spreading

Growth rate


Flower color


Fall color



Mature height
2 Feet
Mature width
3 Feet
Max height
4 Feet
Max width
6 Feet

Additional information

Rain garden suited

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