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A picture of a Douglas Iris

Douglas Iris

Iris douglasiana

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Also known as

Pacific Coast Iris, Marin Iris, Mountain Iris, Californian iris

Full Sun
Light watering
Frost Hardy

H6

RHS hardiness

-20°C

Minimum temperature

Expected size

Height
Spread

1m

Max

50cm

50cm

Min

10cm

5 years to reach maturity

Flowering

  • spring
  • summer
  • autumn
  • winter

More images of Douglas Iris

A photo of Douglas Iris
A photo of Douglas Iris

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Douglas Iris Overview

This is a small low growing Iris. It is an evergreen and will prefer a lightly shaded spot with humus-rich, acidic soil. The flowers are blue or purple and will sometimes appear in yellow or white. Grow in rich moist but well drained soil.

Common problems with Douglas Iris

How to propagate Douglas Iris

Division

By division of rhizomes or offsets in late summer. Certain cultivars should be propagated by division only.

Rhizomes

Seed

Seed in autumn.

Special features of Douglas Iris

Attracts bees

Other uses of Douglas Iris

Naturaliser, wildflower/meadow