Shaga, Crested Iris
Iris japonica

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Species: japonica (juh-PON-ih-kuh) (Info)
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Class:

Species

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

Medium Blue

White/Near White

Bloom Time:

Early midseason (EM)

Midseason (M)

Late Midseason (MLa)

Foliage:

Herbaceous

Other details:

May be a noxious weed or invasive

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

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

Awards (if applicable):

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

Regional

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

,

Anniston, Alabama

Auburn, California

Boca Raton, Florida

Grand Rapids, Michigan

Columbia, South Carolina

Kalama, Washington

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Gardeners' Notes:

0
positives
1
neutral
0
negatives
RatingContent
Neutral

On Apr 11, 2004, Lophophora from Tokyo
Japan wrote:

This is one of the most common ground covers in suburban Tokyo: the "Lazy Homeowner's Iris". It spreads rapidly by shallow underground stolons and can be invasive, although easily removed. If not maintained, old yellowed leaves gradually build up at the base of the plant and become unsightly, as well as the preferred hiding place for snails and slugs and other ickies.