perennial

Blue flag iris

Iris versicolor

Climate-suitable non-native

Current-climate suitability

Create a garden to see this

Future-climate resilience

Create a garden to see this

Sun

Sun or shade

Soil moisture

moisture-retentive, waterlogged

Heat tolerance

Up to about 36°C

Cold tolerance

Down to about -35°C

Waterlogging tolerance

5/5

Drought tolerance

1/5

Mature size

0.6–0.9 m tall, 0.5 m spread

Seasonal interest

Early summer · Violet blue

Maintenance

low

Wildlife supported

General wildlife value 4/5 (verified species relationships are shown only where structured data exists)

Known risks or warnings

Rhizomes are toxic if eaten.

Toxicity: notable

Native status is never inferred from climate similarity. Plants restricted or invasive in a jurisdiction are excluded from recommendations there.

Demonstration data. Climate, plant and retailer records shown here are realistic samples awaiting horticultural validation and live data connections.