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Photo by Far Reaches Farm

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Buy Iris cristata 'Powder Blue Giant'

Also Known As

Powder Blue Giant Crested Iris

Plant type

perennial, groundcover

size

H: 4"-12"
W: 6"-12"

planting zones

3a-9b

3 inch pot | $12

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Fewer than 20 at Secret Garden Growers

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Iris cristata 'Powder Blue Giant' plant details

Iris cristata 'Powder Blue Giant' is a broadleaf deciduous perennial groundcover with green foliage. In spring blue flowers emerge. Attracts hummingbirds. Grows well with mostly sun - shade and even moisture - occasional water. Does well in average, rich and well-drained soil. A good option if you're seeking something heat tolerant, humidity tolerant and verticillium wilt resistant.

CHARACTERISTICS OF Iris cristata 'Powder Blue Giant'

Plant type: perennial groundcover
Plant family: iridaceae
Foliage: deciduous green
Mature size: 6 IN - 12 IN - wide, 4 IN - 12 IN - tall
Flowers: blue blooms in spring
Uses: cutting garden, edging plant, fragrant, rock garden, woodland garden

GROWING CONDITIONS for Iris cristata 'Powder Blue Giant'

USDA Zones: 3a - 9b
Sun exposure: mostly sun - shade
Watering frequency: even moisture - occasional
Resistant to: deer and rabbit, heat, humidity and verticillium wilt
Soil needs: average, rich and well-drained

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Nursery contributed plant descriptions

This beautiful almost-native now has "giant" 3" flowers of soft blue with gold crests and dark blue accents; from eastern woodlands and floodplains, it will look lovely at pond's edge/in rock garden/or woodland. PSh-Sh/M/GDr

By: Forestfarm

Another plant for DRY SHADE! This is a deciduous iris that naturalizes by rhizomes so don’t plant it next to your endangered orchid! 12” tall foliage is topped with 3” wide powdery blue flowers with cobalt, white and golden markings on the falls, April > May. Great choice under oaks and other native trees that need summer dry…this iris is also happy in rich, well drained with regular moisture. Deer resistant. USDA Z3

By: Secret Garden Growers

Iris cristata 'Powder Blue Giant' is considerably huskier and more vigorous than the species. It produces 3 inch wide flowers of light blue with golden crests and deep blue accents. Vigorous and easy to grow! It is great along the woodland path or in front of shrubs. Divide every other year and protect from slugs when foliage is first emerging.

By: Phoenix Perennials and Specialty Plants Ltd.

A much larger version, with soft lavender-blue flowers. Choose this selection as a small scale ground cover among larger perennials and shrubs. Drought tolerant, especially in shade.

By: Edelweiss Perennials

Another selection of Dwarf Crested Iris, and as the name implies, large soft blue blossoms rise just above 4-6" spreading iris foliage. A nice groundcover for the partially shaded woodland garden.

By: Avant Gardens

We have long affection for all the forms of the dwarf Iris cristata which is an east coast native and with Powder Blue Giant our affections sometimes manifest themselves in PDA's such as stroking the large medium blue flowers and oohing. Deciduous carpeter. A real sweety.

By: Far Reaches Farm

Garden photo gallery of Iris cristata 'Powder Blue Giant'

By: Avant Gardens

Gardening facts about Iris cristata 'Powder Blue Giant' plant

How to Grow Iris cristata 'Powder Blue Giant'

Sun Exposure
- mostly sun - shade
Water Needs
- even moisture - occasional
Soil Needs
- average
- well-drained
- rich
Special Situation
- heat tolerant
- humidity tolerant
- verticillium wilt resistant