Blue Flag Iris

Blue Flag Iris  For Sale – Stunning Perennial for Wet Gardens 

The Blue Flag Iris (Iris versicolor) is a sun-loving, rhizomatous perennial and forms a distinct cluster of bright-green, blade-like leaves. Each cluster produces multiple long-stemmed flowers. The flowers in combination with their gently curving leaves creates a graceful persona in the garden.

With its vibrant violet-blue flowers, it is no surprise that this plant is attractive to bees, butterflies, and hummingbirds. This semi-aquatic plant will bring a menagerie of bustling pollinators to any wet garden area or the edge of your water feature. Nestle these water-loving flowers between accent rocks next to your stream or next to the gazebo that overlooks your pond. They are a vibrant addition to your gardenscape.

Plant Details – Iris versicolor (Blue Flag Iris)

Family: Iridaceae

Hardiness Zones: 3-9

Light Requirement: Full sun, partial shade

Water Needs: Medium to wet

Height: 2-3 ft

Spread: 2-2.5 ft

Growth Rate: Moderate

Bloom Time: Late May to June

Flower Color: Violet-blue with a blotch of yellow

Wildlife Value: Attracts pollinators

The Blue Flag Iris is native to the Northeastern USA and commonly found in wetlands and the edges of marshes and bogs. They are considered semi-aquatic plants. It will not tolerate shaded environmental; however, it can do well in partial sun.

This flower holds a special place in the heart of TN Nursery, as the Iris is Tennessee’s state flower. If you live in and love Tennessee, add this delightful flower to your garden to remind you of your beautiful home state!

Garden Uses & Care Tips for Blue Flag Iris

These plants will spread to form colonies of irises and can spread to fill an area in which you need full plant coverage. After midsummer, you can propagate this plant by division. TN Nursery recommends that you do so every 3 years to prevent crowding.

These plants are low maintenance and do not require fertilization after establishment, however they do appreciate bone meal just after planting. They thrive in moist, acidic soil with ample humus. Due to their robust rhizomes, they are particularly useful for erosion control. You can plant these with a native wetland perennial mix to further attract pollinators to your garden!

Key Benefits & Pollinator Value of Blue Flag Iris

Attractive to pollinators

 erosion control

 low-maintenance

These elegant perennials are an excellent addition to your wetland moist area of your garden. Shop for Blue Flag Irises online at TN Nursery. For 68 years, we have served the landscaping industry and homeowners with specimen plants.

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How to Grow and Care for Bare Root Perennials, Tubers, and Bulbs

Bare root perennials, tubers, and bulbs are an easy and economical way to jumpstart your garden with lasting beauty. These dormant plants should be planted in early spring or fall while the soil is cool and workable. Before planting, soak bare roots in water for 1–2 hours to rehydrate them. Choose a location based on the plant’s light needs—most flowering types prefer full sun, while others thrive in partial shade.

For bare root perennials, dig a shallow hole and spread the roots out naturally, ensuring the crown is level with the soil surface. For tubers and bulbs, plant with the pointed side facing up at a depth about two to three times their height. Cover with soil, gently press down, and water thoroughly.

Keep soil consistently moist (not soggy) until new growth appears. Add mulch to retain moisture and suppress weeds, but avoid covering the crown or bulb tops. Once established, these plants require little maintenance—just seasonal watering, occasional dividing, and deadheading or pruning as needed. With proper care, they’ll return and thrive year after year.

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