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Iris cristata (Dwarf Crested Iris)

Dwarf Crested Iris, Lady's Calamus

Iris cristata, Dwarf Crested Iris, Lady's Calamus, Lavender Flowers, Bicolor Iris, Bicolor Flowers, Groundcover Iris
Iris cristata, Dwarf Crested Iris, Lady's Calamus, Lavender Flowers, Bicolor Iris, Bicolor Flowers, Groundcover Iris
Iris cristata, Dwarf Crested Iris, Lady's Calamus, Lavender Flowers, Bicolor Iris, Bicolor Flowers, Groundcover Iris

Iris cristata (Dwarf Crested Iris) is a low-growing perennial forming a quickly spreading mat of narrow, sword-shaped, bright green, pointed leaves. Myriads of small, light violet-blue flowers, up to 1.5 in. across (4 cm), adorned with a conspicuous white splotch and gold crest on each fall, appear in mid-spring, just above the foliage tips in perfect display. They carpet the ground and create a spectacular drift of blue color. This rhizomatous perennial is an excellent plant for the shaded rock garden, perennial border, or woodland garden. May also be used as a seasonal ground cover.

  • Grows up to 6-9 in. tall (15-22 cm) and 6-12 in. wide (15-30 cm). Spreads quickly to form dense colonies in satisfactory growing conditions.
  • Performs best in light shade in moist, humus-rich soils. Plants will tolerate some sun if the soil is consistently moist. Blooms well even in dry shade.
  • A welcomed addition to beds and borders, wall-side borders, coastal gardens, city gardens, cottage gardens, rock gardens, or containers.
  • Deer resistant.
  • No serious insect or disease issues but watch for slugs and snails.
  • Remove any dying foliage in autumn, old flower stems can be cut down after flowering.
  • Propagate by division of rhizomes from midsummer to early autumn
  • All parts may cause discomfort if ingested. Wear gloves and other protective equipment when handling.
  • Toxic to dogs, toxic to cats, toxic to horses.
  • Native to the southeastern United States.

Irises: How to Grow and Care with Success


Want to learn how to grow and care for irises like a pro? Follow these simple steps and enjoy the beauty of these striking plants

Requirements

Hardiness 4 - 10
Heat Zones 1 - 10
Climate Zones 2, 2B, 3, 4, 5, 6
Plant Type Perennials
Plant Family Iridaceae
Genus Iris other species
Common names Dwarf Crested Iris, Iris
Exposure Partial Sun
Season of Interest Spring (Mid)
Height 6" - 9"
(15cm - 23cm)
Spread 6" - 1'
(15cm - 30cm)
Spacing 6" - 12"
(15cm - 30cm)
Maintenance Low
Water Needs Low, Average
Soil Type Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive, Well-Drained
Characteristics Showy
Native Plants United States, Pennsylvania, Massachusetts, Maryland, Northeast, Midwest, Southeast, Southwest, Missouri, Indiana, Ohio, Illinois, Alabama, Georgia, Kentucky, Arkansas, Tennessee, West Virginia, South Carolina, North Carolina, Mississippi, Virginia, Oklahoma
Tolerance Drought, Deer, Dry Soil
Garden Uses Beds And Borders, Ground Covers, Patio And Containers, Wall-Side Borders
Garden Styles Coastal Garden, City and Courtyard, Informal and Cottage, Gravel and Rock Garden
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Alternative Plants to Consider

Iris virginica var. shrevei (Southern Blue Flag)
Iris latifolia (English Iris)
Iris lactea (Milky Iris)
Iris chrysographes (Gold-Marked Iris)
Iris macrosiphon (Long Tubed Iris)
Iris hexagona (Dixie Iris)

Recommended Companion Plants

Athyrium filix-femina (Lady Fern)
Phlox divaricata (Woodland Phlox)
Aquilegia canadensis (Canadian Columbine)

Find In One of Our Guides or Gardens

Native Plant Alternatives to Iris pseudacorus (Yellow Iris)
Irises: How to Grow and Care with Success
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 4 - 10
Heat Zones 1 - 10
Climate Zones 2, 2B, 3, 4, 5, 6
Plant Type Perennials
Plant Family Iridaceae
Genus Iris other species
Common names Dwarf Crested Iris, Iris
Exposure Partial Sun
Season of Interest Spring (Mid)
Height 6" - 9"
(15cm - 23cm)
Spread 6" - 1'
(15cm - 30cm)
Spacing 6" - 12"
(15cm - 30cm)
Maintenance Low
Water Needs Low, Average
Soil Type Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive, Well-Drained
Characteristics Showy
Native Plants United States, Pennsylvania, Massachusetts, Maryland, Northeast, Midwest, Southeast, Southwest, Missouri, Indiana, Ohio, Illinois, Alabama, Georgia, Kentucky, Arkansas, Tennessee, West Virginia, South Carolina, North Carolina, Mississippi, Virginia, Oklahoma
Tolerance Drought, Deer, Dry Soil
Garden Uses Beds And Borders, Ground Covers, Patio And Containers, Wall-Side Borders
Garden Styles Coastal Garden, City and Courtyard, Informal and Cottage, Gravel and Rock Garden
How Many Plants
Do I Need?
Guides with
Iris Species
Not sure which Iris Species to pick?
Compare Now

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