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Iris, Peacock Butterfly Pennywhistle

Buy Any 3 Perennial Plants or Bulbs & Save 20%
Buy Any 3 Perennial Plants or Bulbs & Save 20%. Cannot be applied to previous orders. Limited time only. While supplies last.

Short Description

Pure tranquility in violet and gold.

Full Description

Like a watercolor painting, this Siberian iris is a study in pure tranquility, with its violet petals gently graced with touches of gold, yellow and cream. Easy to grow and care for, iris is a staple of perennial gardens, providing verticality with its grass-like leaves even when not in bloom.
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Iris, Peacock Butterfly Pennywhistle
Iris, Peacock Butterfly Pennywhistle, , large
Item #: 29211
3 Bare Root Plants
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Product properties

Zone This refers to the USDA hardiness zone assigned to each part of the country, based on the minimum winter temperature that a region typically experiences. Hardiness zone ranges are provided for all perennial plants and you should always choose plants that fall within your range.


Sun The amount of sunlight this product needs daily in order to perform well in the garden. Full sun means 6 hours of direct sun per day; partial sun means 2-4 hours of direct sun per day; shade means little or no direct sun.

Full Sun

Height The typical height of this product at maturity.

28-32 inches

Spread The width of the plant at maturity.

8-12 inches

Bloom Season The time of the year when this product normally blooms.


Resistant To Adverse garden conditions, such as heat or frost, deer or rabbits, that this product can tolerate well.


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Item 29211 cannot ship to: AA, AE, AK, AP, AS, CN, FM, GU, HI, MH, MP, PR, PW, VI
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Introduction to Perennials
Introduction to Perennials
Perennials return year after year blooming on their own. Watch this introduction and discover how easy and rewarding growing perennials can be.
Watch video
Perennials Tour #1
Perennials Tour #1
Take a garden tour and see favorite perennial plants in a garden setting. In this video- Shasta Daisy, Ornamental Grass, Butterfly Bush, Echinacea and Hydrangea.
Watch video
  • Iris

    Start Indoors Start Indoors Starting seeds indoors is called Indoor Sow or Indirect Sow and these dates are when to sow seeds indoors in the spring or summer
    Transplant Transplant When to transplant bulbs or roots in the garden for spring
    Start Outdoors Start Outdoors Starting seeds outdoors is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the spring or summer
    Start Indoors Fall Start Indoors Fall Starting seeds indoors in the fall called Indoor Sow or Indirect Sow and these dates are when to sow seeds outdoors in the fall
    Transplant Fall Transplant Fall Transplant Fall-When to transplant bulbs or roots in the garden for fall
    Start Outdoors Fall Start Outdoors Fall Starting seeds outdoors in the fall is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the fall
    First Date: Mar-28 - Last Date: May-16
    First Date: Sep-17 - Last Date: Oct-29

Planting Bulbs in the Garden in Fall:

  • Plant when you receive the bulbs in fall.
  • Success with bulbs depends on good soil preparation. Select a site in full sun to light shade with good drainage where water does not stand on the surface after a rain event. Bulbs thrive in well-drained, moist soils. Mulch the soil to protect the bulbs from the heat of strong summer sun.
  • Dig the soil to a depth of at least a few inches deeper than the recommended planting depth. Work in organic matter to improve drainage, and at the same time improve the ability of the soil to retain moisture. A moderate amount of a balanced fertilizer may be incorporated into the soil at this time. Mix the fertilizer into the soil so that it does not come into direct contact with the bulb.
  • Dig holes spaced 4-6 inches apart. Plant Iris reticulata bulbs 3 inches deep and other iris bulbs 4-6 inches deep. The general rule of thumb is to plant three times as deep as the bulb’s vertical diameter.
  • Plant the flat part of the bulb down and the pointed part up.
  • Thoroughly water and apply a light mulch layer on top of the soil (1-2 inches) to conserve water and reduce weeds.

Planting Bare Root Plants in the Garden:

  • Select a location in full sun with good rich well drained organic soil.
  • Dig a shallow hole 2-4 inches deep and twice as wide as the rhizome.
  • Make a small mound in the middle of the planting hole. Place the rhizome on top of the mound and spread the roots on both sides.
  • Fill the hole with soil and firmly tamp around the rhizome but only partially cover the rhizome.
  • Water very well to fully saturate the roots and the soil.
  • Wait until new growth starts to appear before applying a layer of mulch.
  • Apply an organic bulb fertilizer when the plants emerge in the spring.
  • Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their germination. 
  • Mulches also help retain soil moisture and maintain even soil temperatures. For perennials, an organic mulch of aged bark or shredded leaves lends a natural look to the bed and will improve the soil as it breaks down in time.  Always keep mulches off a plant’s stems to prevent possible rot.
  • Remove and discard foliage after it dies back. 
  • Iris is easy to grow in beds and borders. The small spring bulbs also work well in rock gardens. For the best visual impact plant iris in masses.
  • Iris makes a fabulous cut flower.
Full Sun
28-32 inches
8-12 inches
Bloom Season
Resistant To
Ornamental Use
Beds, Borders, Cut Flowers
Planting Time
Fall, Spring
Life Cycle