Siberian iris

Iris sibirica

Photo/Illustration: 
Jennifer Benner
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
Siberian iris (Iris sibirica)
EYE-riss sih-BEER-ih-kah
Genus:  Iris

Attractive, grass-like leaves to 18 inches long are topped by showy flowers in a wide range of colors. Flowers unfurl in May and bloom well into June. Cultivars include ‘Caesar’s Brother’, with rich purple flowers; ‘Eric the Red’, a bright violet-pink Siberian; and ‘Chilled Wine’, a garnet iris suffused with blue.

Care: 

Thrives in acidic, heavy, clay soils, and loves wet feet. Low maintenance, requiring only feeding and division every few years. Ideal for ponds, streams, or boggy areas. In beds, they require a few extra waterings in a season.

Propagation: 

Lift and divide clumps, or separate bulb offsets, and plant immediately, in early autumn.

Problems: 

Iris borer, verbena bud moth, whiteflies, iris weevil, thrips, slugs and snails, aphids, and nematodes. Bacterial leaf blight and soft rot, crown rot, rhizome rot, leaf spot, rust, viruses, and scorch.

Overview

Height
1 ft. to 3 ft.
Growth Habit
Clumps
Growth Pace
Slow Grower
Light
Full Sun to Part Shade
Moisture
Medium to Wet
Maintenance
Moderate
Characteristics
Showy Flowers
Bloom Time
Early Summer,
Late Spring,
Spring,
Summer
Flower Color
Island Paradise,
Pink Yarrow,
Niagara
Uses
Beds and Borders,
Cut Flower,
Waterside
Style
Water Garden
Seasonal Interest
Summer Interest
Type
Perennials