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Japanese Water Iris, Japanese Flag, Russian Iris 'Kontaki-On'

Iris ensata

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Iris ensata by shadowgirl
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Family
Iridaceae (eye-rid-AY-see-ee)
Info
Genus
Iris (EYE-ris)
Info
Species
ensata (en-SA-tuh)
Info
Synonym
Iris kaempferi
Height
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Spacing
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Hardiness
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Sun Exposure
Full Sun
Danger
Parts of plant are poisonous if ingested
Bloom Color
Dark Blue
Silver/Gray
Foliage
Herbaceous
This plant is resistant to deer
Smooth
Class
Japanese (JI)
Bloom Time
Midseason (M)
Other Details
Other details

Unknown - Tell us

Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
Patent Information
Non-patented
Awards (if applicable)
Honorable Mention
Foliage Color

Unknown - Tell us

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Very high moisture needs; suitable for bogs and water gardens
Where to Grow
Can be grown as an annual
Regional

This plant is said to grow outdoors in the following regions:

Southold, New York

Moscow, Tennessee

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kivariver
Ipswich, MA (Zone 5b) | January 2005 | positive

(Lois Rich) 1986 [(Worley sdlg from Marhigo seeds x Star at Midnight sib) x Maddocks sdlg x Marx sdlg)] X M65-9. 6-falls. Midseason. Sil...Read More

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