Iris siberica Cape Cod Boys

Available late June

photo of Iris 'Cape Cod Boys' courtesy of Walters Gardens

Siberian Iris

The periwinkle blue flowers of 'Cape Cod Boys' will catch your eye in the garden. The flower has darker blue veining that intensifies into a defined pattern at the end of the petals. Prominent clear lemon yellow signals complete the look. This variety blooms for a long time. When it is not flowering, the attractive, wide blue-green leaf blades will catch your eye. Siberian Iris and Peonies are a beautiful combination in the garden.

  • Height: 69-81 cm (27-32 in)
  • Spread: 46-61 cm (18-24 in)
  • Cold Hardiness: Zone 3-9
  • Sun or Shade: sun to part shade (minimum 4 hrs of direct sun)
  • Bloom Time: early summer
  • Leaf Colour: green
  • Bloom Colour: periwinkle blue
  • Critter Resistance: deer and rabbits
  • Nature Attraction: bees

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 into 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.