A picture of a Douglas Iris

Douglas Iris

Iris douglasiana

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

Iris douglasiana — Douglas Iris.
Colony of the native iris on Tomales Point, Point Reyes National Seashore, Marin County, California.
Photograph taken 3rd April 2004 by Stephen Lea

This reduced image placed in the public domain 9th April 2004.
A photo of Douglas Iris

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