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PlantFiles: Species Iris
Iris giganticaerulea 'Her Highness'

 
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Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Species: giganticaerulea (jy-gan-tee-see-ROO-lee-uh) (Info)
Cultivar: Her Highness

» View all varieties of Iris

Class:
Species

Height:
36-48 in. (90-120 cm)

Spacing:
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)

Hardiness:
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)
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

Bloom Color:
Gold (Yellow-Orange)
White/Near White

Bloom Time:
Extra early (EE)

Foliage:
Herbaceous
Smooth-Textured

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

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

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

Click thumbnail
to view:

By Joan
Thumbnail #1 of Iris giganticaerulea by Joan

Profile:

No positives
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorComment
Neutral Joan On Nov 19, 2006, Joan from Belfield, ND (Zone 4a) wrote:

Collected in 1950 and registered in 1957 by W. Levingston

Awards: HM 1957; Mary Swords Debaillon Award 1959

Neutral dmj1218 On May 27, 2006, dmj1218 from west Houston, TX (Zone 9a) wrote:

6" open-form blooms, white with gold signal, are borne on 36-40" stems. This is a truly royal Louisiana Iris--tall, stately, snow white and tapered. Outstanding in arrangements. Early bloomer and recipient of the Mary S. DeBallion Award.



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