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Iris versicolor

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Iris versicolor

Common Name: Northern Blueflag Iris

Northern Blueflag Iris is a native wetland species that grows between 1 and 3 feet tall. It is commonly found in marshes, along pond edges, and in wet meadows. This iris prefers moist to wet, rich soils and can tolerate standing water. Its striking blue-violet flowers bloom in late spring to early summer, providing important nectar sources for pollinators. It is often used in rain gardens, shoreline restorations, and water garden plantings due to its ornamental appeal and ability to stabilize soil in wet conditions.

Characteristics

Product Form	Plant, Seed
Type	Forb
Sun	Full Sun, Partial Sun, Shade
Soil	Clay, Loam, Sand/Gravel, Peat, Calcareous
Moisture	Wet, Aquatic
Average Max Height (inches)	48
Suggested Plant Spacing (inches)	12
Bloom month(s)	May, June, July, August
Bloom Color or Type	Blue, Violet
Dominance	Medium

Range Maps

Sowing Information

For most homeowners, the recommended method is to hand-broadcast seed at a minimum rate of 16–64 PLS (Pure Live Seed) ounces per acre. To ensure even coverage, broadcast the seed in perpendicular passes across the site. Grass seed should be broadcast first and lightly raked into the soil. Afterward, apply a light mulch layer using clean, seed-free straw or, preferably, our native Little Bluestem straw, available at our retail garden centers. Once mulching is complete, broadcast native wildflower seed over the area without raking it in. A good rainfall or thorough watering will provide sufficient soil contact for successful germination.

Planting Information

Dig a hole in your planting site slightly larger than the plant’s root system. When placing the plant into the hole, ensure that the soil line remains consistent with its original level in the pot. Fill in around the roots with the excavated soil, gently firming it to eliminate air pockets. Water the plant thoroughly the same day to promote successful establishment.

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