Iris versicolor, commonly known as Blue Flag Iris, is a native wetland perennial featuring violet blue flowers with delicate yellow and white markings. Well adapted to moist soils and shallow water margins, it provides a bold vertical accent and natural beauty to rain gardens and water features.
Height & Spread: 24 - 36 in x 18 - 24 in
Bloom Time: Late spring to early summer
Light Requirements: Full sun to part sun
Soil Preference: Moist to wet soils; tolerates standing water and clay
Watering Needs: High; thrives in saturated soils and shallow water environments
Deer Resistance: Moderate
Native Status
Native to eastern and central North America, commonly found along streambanks, marshes, and wetlands. Plays a vital ecological role in native habitats and is a valuable native plant in restoration projects.
Wildlife & Insects
Butterflies
- Visited by species like Monarchs and Painted Ladies for nectar during bloom season.
Bees
- Native bumblebees and long tongued bees forage heavily on flowers rich in nectar and pollen.
Beneficial Insects
- Supports wetland pollinators and attracts predatory insects that help maintain ecosystem balance.
Spacing & Landscape Use
Spacing Recommendations
- Space 18 - 24 in apart to allow healthy clump development and natural spread in wet settings.
Landscape Placement
- Ideal for rain gardens, pond edges, wet meadows, and habitat restoration areas where native plants are prioritized.
Companion Plants
- Chelone glabra (White Turtlehead) - Upright white blooms and moisture loving habits make it an excellent wetland companion.
- Lobelia cardinalis (Cardinal Flower) - Striking red spikes contrast vividly with iris blooms and attract hummingbirds.
- Caltha palustris (Marsh Marigold) - Early blooming golden flowers brighten wet soils alongside iris foliage.
- Carex stricta (Tussock Sedge) - Adds grassy texture and thrives in similar hydric conditions.
- Thalictrum dasycarpum (Purple Meadow Rue) - Airy flowers and upright form add movement and soft texture near moist planting sites.