Photo by Melody

PlantFiles: Blue Flag, Dagger Flower, Water Iris, Liver Lily
Iris versicolor

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Species: versicolor (VER-suh-kuh-lor) (Info)

» View all varieties of Iris

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23 members have or want this plant for trade.

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18-24 in. (45-60 cm)

15-18 in. (38-45 cm)

USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun

Parts of plant are poisonous if ingested

Bloom Color:

Bloom Time:
Midseason (M)


Other details:
Requires consistently moist soil; do not let dry out between waterings
Very high moisture needs; suitable for bogs and water gardens

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

Awards (if applicable):
Unknown - Tell us

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There are a total of 10 photos.
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1 positive
3 neutrals
No negatives

Gardeners' Notes:

Neutral theNobody14161 On Jun 13, 2010, theNobody14161 from Kalamazoo, MI wrote:

Looks very similar to Iris virginica.

Positive Kestris On May 12, 2010, Kestris from Roanoke, VA (Zone 7b) wrote:

Fast growing. Lots of long, slender leaves. Multiplies like nuts. Blooms last a day, and re in large quantities once it gets established.

Neutral leelynne On May 11, 2009, leelynne from Dover, PA (Zone 6a) wrote:

At the house I just bought in December these flowers are everywhere. There're probably about 100 of these coming up all along the front of my land. They are very pretty and start blooming here in May. I'm not sure if they need to be separated or not but I think I'm going to try digging some up and giving them away since there are so many because I feel they need to be thinned out a little, they're taking over my front yard!

Neutral Gabrielle On Jul 12, 2008, Gabrielle from (Zone 5a) wrote:

Blooms May-June in my garden. Interesting blooms.


This plant has been said to grow in the following regions:

Wasilla, Alaska
Manchester, Connecticut
Machesney Park, Illinois
Washington, Illinois
Barbourville, Kentucky
Annapolis, Maryland
Deer River, Minnesota
Isle, Minnesota
Frenchtown, New Jersey
Hendersonville, North Carolina
Raleigh, North Carolina
Hulbert, Oklahoma
Oklahoma City, Oklahoma
Dover, Pennsylvania
Broaddus, Texas
Cedar Creek, Texas
Port Lavaca, Texas
Essex Junction, Vermont
Leesburg, Virginia
Roanoke, Virginia
Merrimac, Wisconsin

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