Species Iris, Shaga, Japanese Crested Iris

Iris japonica

Family
Iridaceae (eye-rid-AY-see-ee)
Genus
Iris (EYE-ris)
Species
japonica (juh-PON-ih-kuh)
Synonym
Evansia chinensis
Evansia japonica
Iris chinensis
Iris fimbriata
Moraea fimbriata
Height
12-18 in. (30-45 cm)
Spacing
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
Hardiness
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)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Sun Exposure
Full Sun
Sun to Partial Shade
Danger
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Orange
Dark Blue
White/Near White
Foliage
Herbaceous
Class
Species (SPEC)
Bloom Time
Early midseason (EM)
Midseason (M)
Late Midseason (MLa)
Other Details
Other details
May be a noxious weed or invasive
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
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Awards (if applicable)
Foliage Color
Bloom Characteristics
Water Requirements
Average Water Needs; Water regularly; do not overwater
Where to Grow
Regional

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

Anniston, Alabama

Auburn, California

Boca Raton, Florida

Grand Rapids, Michigan

Columbia, South Carolina

Kalama, Washington

show all

Featured Videos

Gardener's Notes:

0
positive
1
neutral
0
negative
Sort By:
Sort By:
L
| April 2004 | neutral

This is one of the most common ground covers in suburban Tokyo: the "Lazy Homeowner's Iris". It spreads rapidly by shallow underground st...Read More

Featured
Hoya Species
(Hoya multiflora)
Batwing Moth
(Chelepteryx collesi)
Broad-billed Hummingbird
(Cynanthus latirostris)
Featured
Hoya Species
(Hoya multiflora)
Batwing Moth
(Chelepteryx collesi)
Broad-billed Hummingbird
(Cynanthus latirostris)