Height:

28.0-34.0 Inches

Spread:

18.0-24.0 Inches

Hardiness Zones:

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

Flower Color:

Purple 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.

Growing Temperature:

45-55° F

Soil PH:

6.0-7.0

EC (What is EC?):

1.0-1.5 pour through method

Fertility:

Growers can apply water-soluble fertilizers using 100 ppm of nitrogen as needed or constant liquid fertilization at 50-75 ppm nitrogen with every irrigation. Controlled-release fertilizers can also be used to deliver nutrients by incorporating 0.75-1.0 pounds of elemental nitrogen per cubic yard of growing mix prior to potting.

Pests & Diseases:

Crown and root rot (Sclerotium), leaf spot (Heterosporium,Didymellina), basil rot (Fusarium), rhizome rot (Rhizoctonia), rust (Puccinia), rhizome bacterial soft rot (Erwinia), foliar nematode (Aphelenchoides)

Potting & Timing:

Root Trimming: Rhizomes are available bare root in late summer and in 3" plug form in spring. Generally, they do not need to be trimmed.
The top 25-50% of the rhizome needs to be exposed above the soil line. This is true for the home gardener as well as the grower. Rhizomes potted up in the fall have a better chance of blooming the next season than spring planted plugs.
For bare root rhizomes: Soak in a 10% bleach solution for 15-20 minutes upon arrival. Allow rhizomes to dry in a sunny area for two to three days before planting. Overwintering losses are often attributed to overwatering; water sparingly.

Moisture:

For potting soil use well-drained commercial planting media.
Avoid excessive moisture levels during the fall and winter.

Planting Level:

The top 25-50% of the rhizome should be above the soil line.

PGRs/Pinching:

If height control is necessary, drench applications of paclobutrazol (Bonzi, Paczol or Piccolo) at 6-10 ppm will provide satisfactory results.

Lighting:

Provide high light levels.

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