Iris, Crested (Iris cristata)-Hort Answers - University of Illinois Extension
University of Illinois Extension

University of Illinois Extension

Hort Answers

Groundcover

Iris, Crested
Iris cristata

Flowers of Crested Iris
Flowers of Crested Iris
 
Features
Irises in spring. 
 
Culture
Best in partial shade, but will grown in full sun as long as the soil is consistently moist. 
 
Cultivars
  • 'Alba'-white flowers.
  • 'Summer Storm'-deep blue flowers.
 
 
Mature Height
6-8 Inches
 
USDA Hardiness Zone
4 - 9 
 
Bloom Color
Blue
Purple
White
 
 
Bloom Season
April - May
 
Soil Conditions
Moist, Well-Drained
 
 
Exposure/Light Requirements
Full Sun
Partial Sun/Shade
 
 
Foliage Color
Green
 
 
Pests and Problems

Environmental Damage

Insect Damage


Additional pests and problems that may affect this plant:

Slugs, iris borer and bacterial soft rot are possible problems.
 
Additional Notes
Forms a fairly dense ground cover.

 

 
Related Resources
Home, Yard & Garden Pest Guide
Illinois Commercial Landscape and Turfgrass Pest Management Handbook
U of IL - Distance Diagnosis through Digital Imaging
U of IL - Plant Clinic