Iris sibirica 'Cape Cod Boys'

Common Name: Siberian Iris

Just like the famous shore community of Cape Cod, this Siberian Iris will make you think of beaches and the ocean. Periwinkle blue flowers have darker blue veining that intensifies into a defined pattern at the end of the petals. Prominent clear lemon yellow signals complete the look. This variety blooms for a long time. When it is not flowering, the attractive, wide blue-green leaf blades will catch your eye.

Siberian irises are haled for their elegant, delicate flowers and disease resistance. They perform admirably in the sunny to partially shady garden, but need plenty of water throughout the season to continue looking their best. In naturalized settings, they are particularly effective around water features. They can also be grown under Black Walnut trees since they are not effected by juglone. Siberian Irises bloom before Japanese Irises but after Tall Bearded Irises.

Available Sizes (Wholesale):

Product Profile

Grade #1 Bare Root

Grade #2 Bare Root

Height:

27.0-32.0 Inches

Spread:

18.0-24.0 Inches

Hardiness Zones:

3,4,5,6,7,8,9

Flower Color:

Blue shades

Foliage Color:

Green shades

Sunlight:

Full Sun (> 6 hrs. Direct Sun) Part Shade (4-6 hrs. Direct Sun)

Water Requirements:

Average Water Needs Consistent Water Needs

Soil Quality:

Average Soil Quality

Soil Chemistry:

Acidic Soil (pH < 7.0) Neutral Soil (pH = 7.0)

Bloomtime:

Early Summer

Attracts Wings:

Attracts Hummingbirds Bee Friendly

Critter Resistant:

Deer Resistant Rabbit Resistant

Growth Rate:

Medium

Garden Style:

Cottage Eclectic Rain Garden Woodland Shade

Other Features:

Border Plant Cut Flower Mass Planting Specimen Focal Point

Origin:

Not Native to North America

Siberian Irises are among the easiest and most trouble-free species to grow in their genus. They prefer full sun, though they will tolerate part shade especially in warmer zones. Plant in rich, moist soil that is moderately acidic (5.2-6.4). Deadheading this variety will not prolong its bloom.

It is best to leave these irises untouched until there is a noteable lessening of blooms. At that time, they may be divided, preferably in the fall but also in the spring. New clumps may take two or three years to become firmly established, at which time they will begin to bloom profusely. According to Steven Still, Siberian Irises are the best species of Iris for the south.

Iris (Siberian)

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Grade #1

Container:

Trade 1 Gallon Container

When to Plant:

Late winter to spring

Finish:

6-8 weeks

Grade #2

Container:

Trade 1 Gallon Container

When to Plant:

Late winter to spring

Finish:

8-10 weeks

Growing Temperature:

60-65° F

Holding Temperature:

50-60° F

Soil PH:

6.0-6.5

EC (What is EC?):

1.5-2.5 pour through method

Fertility:

Feed at a moderate rate of 100 - 125 ppm N at each watering.

Vernalization:

Provide 8-10 weeks of temperatures below 45° F for best flower perfomance.

Pests & Diseases:

Aphids, caterpillars, grasshoppers, leafhoppers, slugs, snails and spider mites are some of the pests that can be observed on Iris. Crown and root rot are the most common disease issues.

Potting & Timing:

Plant bare root plants in late winter to spring. Grade 1 bare root is best for a quick turn 1 gallon or for 2 gallon containers.
Grade 2 bare root is best suited for 2 quart or trade 1 gallon containers.

Moisture:

Moderate, consistent moisture for best growth.

Planting Level:

Crown level with the soil line.

Lighting:

High light levels are recommended for best growth.

Grower Tips:

Planting in well-drained media is best.

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Characteristics

Height:

27.0-32.0 Inches

Spread:

18.0-24.0 Inches

Hardiness Zones:

3,4,5,6,7,8,9

Flower Color:

Blue shades

Foliage Color:

Green shades

Sunlight:

Full Sun (> 6 hrs. Direct Sun) Part Shade (4-6 hrs. Direct Sun)

Water Requirements:

Average Water Needs Consistent Water Needs

Soil Quality:

Average Soil Quality

Soil Chemistry:

Acidic Soil (pH < 7.0) Neutral Soil (pH = 7.0)

Bloomtime:

Early Summer

Attracts Wings:

Attracts Hummingbirds Bee Friendly

Critter Resistant:

Deer Resistant Rabbit Resistant

Growth Rate:

Medium

Garden Style:

Cottage Eclectic Rain Garden Woodland Shade

Other Features:

Border Plant Cut Flower Mass Planting Specimen Focal Point

Origin:

Not Native to North America

Iris (Siberian)

Download .PDF

Grade #1

Container:

Trade 1 Gallon Container

When to Plant:

Late winter to spring

Finish:

6-8 weeks

Grade #2

Container:

Trade 1 Gallon Container

When to Plant:

Late winter to spring

Finish:

8-10 weeks

Growing Temperature:

60-65° F

Holding Temperature:

50-60° F

Soil PH:

6.0-6.5

EC (What is EC?):

1.5-2.5 pour through method

Fertility:

Feed at a moderate rate of 100 - 125 ppm N at each watering.

Vernalization:

Provide 8-10 weeks of temperatures below 45° F for best flower perfomance.

Pests & Diseases:

Aphids, caterpillars, grasshoppers, leafhoppers, slugs, snails and spider mites are some of the pests that can be observed on Iris. Crown and root rot are the most common disease issues.

Potting & Timing:

Moisture:

Moderate, consistent moisture for best growth.

Planting Level:

Crown level with the soil line.

Lighting:

High light levels are recommended for best growth.

Grower Tips:

Planting in well-drained media is best.