Siberian Iris

The plant is branch stemmed with green grass-like leaves that are ribbed and occasionally have a pink tinge at the base of some leaves. They are normally shorter than the flowering stems which at maturity measure between 50-100cm (20-47in) high. Each flowering stem of which there are usually 1-3 per plant bears anywhere between 2-5 flowers during late spring to early summer. The flowers which themselves are 6-7cm (2-3in) in diameter are different shades of blue including blue violet and occasionally white in color. Each flower has two pairs of petals consisting of 3 large outer petals (sepals) and 3 smaller inner petals (tepals). The sepals which measure 5-7cm (2-2.8in) long and have beautiful dark blue veining droop down exposing the tepals which have lighter veining, smoother texture, and measure 4.5-5cm (1.3-2.0in) long.

The plant can tolerate temperatures as low as -20 degrees Celsius (-4F) and is hardy to USDA (United States Department of Agriculture) zone 2-8 as well as zone H1. It should be noted that if mulched the plant can withstand colder temperatures. This plant thrives in fertile and slightly acidic soil with a PH level greater than 5.6. If utilizing clay or sand soil types an organic fertilizer (manure or compost) should be applied at the time of planting. While this plant enjoys full sunlight it can tolerate partial shade especially in very hot and arid climates. Watering is needed during growing season (spring and summer) for best blooms and can tolerate occasional flooding but should not be left in standing water.

Siberian Iris can be placed waterside and are ideal big garden plants. They also make beautiful additions to naturalized gardens by planting them alongside other perennials and grasses. It also makes a pretty herbaceous border and a they are a wonderful addition to gardens in general.