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Blue Flag Iris

Iris versicolor, Iridaceae

Zones
3–9
Layer
Aquatic
Lifespan
Perennial
Growth
Moderate

Guild Roles

Pollinator Attractor

Growing Conditions

Sun

Partial Sun (acceptable)Full Sun (optimal)

Water

High

Soil pH

5 – 7

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

White TurtleheadChelone glabra
Pollinator SharingBeneficial Insect Habitat
Broadleaf ArrowheadSagittaria latifolia
Beneficial Insect Habitat

Antagonistic Plants

Joe Pye WeedEutrochium purpureum

Joe Pye weed's large size and spreading roots can crowd out iris rhizomes

Uses

Functions

Water FiltrationWildlife Habitat

Common Questions

What zones does Blue Flag Iris grow in?

Blue Flag Iris grows in USDA hardiness zones 3 through 9.

What are good companion plants for Blue Flag Iris?

Good companions for Blue Flag Iris include White Turtlehead, Broadleaf Arrowhead.

Design guilds with Blue Flag Iris and see companion relationships visually.

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