Iris siberica Concord Crush
Iris 'Concord Crush' Whitehouse Nursery and Display Gardens

Siberian Iris

Iris 'Concord Crush' has lavishly ruffled double blooms. The standards are violet blue and the falls are slightly darker. Signals are dark blue heavily veined with yellow.

  • Height: 71-81 cm (28-32 in)
  • Spread: 30-45 cm (12-18 in)
  • Cold Hardiness: Zone 3-7
  • Sun or Shade: sun to partial shade
  • Bloom Time: late spring
  • Leaf Colour: green
  • Bloom Colour: blue
  • Critter Resistance: deer

Growing and Maintenance Tips

Siberian Iris are the most trouble free of the Iris species. Grow them in full sun in rich soil that is moderately acidic. Working some peat moss in the soil will help to make the soil more acid and moisture retentive. They will take a couple of years to establish and then can be left until flowering is not as profuse. Divide in August when necessary.