Home Prairie and Wetland Center
16245 S US Hwy 71
Belton, MO 64012
Tel: (816) 331-9738
Fax: (816) 331-9739

Iris versicolor

Blue Flag

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Iris versicolor (Blue Flag)

A hardy lakeshore perennial of shallow water, two to three tall. Flowers bloom May to June and are large and showy. Petals are light to deep blue with yellow and whitish markings at the base of the sepals. Each stem bears two or three flowers. The well developed flower petals and sepals spread out nearly flat. Good for water gardens and bogs. One of the easiest, and showiest, of native aquatics for the home gardener.

Additional Information:

24-36 Inches


18-24 Inches


Bloom/Seasonal Color

USDA Hardiness Zone 2-9

Home Owner Growing and Maintenance Tips:
No known insects or diseases, but muskrats are fond of the roots.

Good Companions
Rose Mallow (Hibiscus lasiocarpos), Southern Blue Flag (Iris virginica var. shrevei), Cardinal Flower (Lobelia cardinalis), Water Lily (Nymphaea odorata), Pickerel Plant (Pontederia cordata), Lizard's Tail (Saururus cernuus)

Characteristics & Attributes

Hydrologic Designation


Season of Interest

Mid (May-June)

Soil Moisture


Special Uses

Fresh Cut Flower

Sun Exposure

Full Sun

USFS MO Ecological Map

Wildlife Benefit

Food/Small Animals