Iris (Siberian)

Culture Sheet

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

Grower Tips:

Planting in well-drained media is best.

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.