Douglas Iris

Iris douglasiana

An evergreen perennial native to coastal California and Oregon, forming clumps of slender, strappy, gray-green foliage. Lavender-blue flowers with distinctive white, yellow, and blue markings are carried on slender stems, emerging during winter and spring. This species thrives in coastal conditions, but is tolerant to inland conditions with increased watering during summer.


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Douglas Iris

Iris douglasiana
Plant Type

Garden Use


Flower Color


Foliage Color

Deciduous / Evergreen

Bloom Time


Mature Size

Growth Rate

Growth Habit


Light Needs

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Water Needs


Sunset Zone


USDA Hardiness Zones

Garden Style

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Special Features

Common Nursery Plant Forms

We use plant forms to describe how a plant has been grown in our nursery. Here are some common nursery plant forms explained.

A bush or multi refers to a shrub or small tree grown with multiple stems.

A standard has been trained to have a single trunk.
Many bush/multi plants are also available in standard form, so be sure to check the form when you add plants to your cart.

A column refers to a tree or shrub grown into a tall, narrow shape.

An espalier is a plant trained to grow in a two-dimensional form against a trellis.

Staked plants will be tied to a wooden or plastic stake during the growing process. This technique is generally used on vines but is sometimes used for certain trees or shrubs.