In Stock - Ships in 4 to 7 days
Audubon Native Blueflag Iris and native birds
Native Blueflag Iris
Native Blueflag Iris
Native Blueflag Iris
Native Blueflag Iris
Native Blueflag Iris
Native Blueflag Iris
Audubon Native Blueflag Iris product shot
Audubon Native Blueflag Iris perennial bloom
Native Regions map for Blueflag Iris
Ruby Throated Hummingbird
Ruby Throated Hummingbird
Audubon Native Blueflag Iris and native birds
Native Blueflag Iris
Native Blueflag Iris
Native Blueflag Iris
Native Blueflag Iris
Native Blueflag Iris
Native Blueflag Iris
Audubon Native Blueflag Iris product shot
Audubon Native Blueflag Iris perennial bloom
Native Regions map for Blueflag Iris
Ruby Throated Hummingbird
Ruby Throated Hummingbird

Growth Facts

  • Hardiness Zone: 3-9
  • Mature Height: 2-3' tall
  • Mature Width: 2-3' wide
  • Exposure: Full Sun/Part Shade
  • Spacing: 2-3' apart



  • Purple flowering meadow grass
  • Trumpet-shaped purple flowers bloom atop grassy stems in late spring through summer
  • A hardy perennial with elegant long blades of green foliage
  • Excellent around ponds, lakeshores, and patio containers
  • May Benefit & Attract: Hummingbirds
  • The National Audubon Society protects birds and the places they need, today and tomorrow.
  • This bird-friendly native plant provides food and shelter for local and migrating birds and other wildlife
  • All Audubon® branded trees and plants are grown 100% Neonic-free by Bower & Branch, making these plants safer for the birds and safer for the environment.
  • Hand Selected, Fresh from the Grower
  • Ships in a plant-safe designed box

Audubon® Native Blueflag Iris

Bower & Branch Trees and Plants

Audubon® Plants for Birds: Iris versicolor

Regular price $64.00
In Stock - Ships in 4 to 7 days
Shipping included
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Why the Audubon® Native Blueflag Iris?

Swampy soil becomes a blessing with Northern Blue Flag! This splendid native Iris loves constantly moist soil, where it becomes a showpiece. The handsome, strappy foliage creates a sharp vertical element in your landscape throughout the growing season, and the graceful, cobalt-blue flowers paint a pretty picture in late spring and early summer. Hummingbirds will hover around the blossoms, sipping their sweet nectar. Butterflies may also visit the flowers, along with bumblebees and other native bees. Make a troublesome, soggy part of your yard come alive with flora and fauna when you fill it with wonderful natives like Northern Blue Flag!

There are a few hundred species of Irises on the planet, so it is not surprising that these plants are well-known and well-loved by humans all over the world. They are rich in symbolism. In Greek mythology, Iris was the goddess of the rainbow and was a bridge for women to the afterlife; Greeks would therefore plant Irises on women’s graves. According to the ancient Egyptians, Irises symbolized wisdom, faith, and courage. In North America, the Northern Blue Flag Iris was once considered a healer of a variety of ills. This was a dangerous idea, because the plant is poisonous when ingested if not prepared correctly.

How to use in the landscape?

Over the years, many of our native wetlands have been drained or filled in. Long considered useless, wetlands are actually precious to wildlife, water quality, and the health of the whole planet! We should preserve those spaces and the plants that flourish there. Northern Blue Flag is one such species that we can’t afford to lose. Besides service wildlife, it’s a living water filter that cleans mucky water naturally.

Why Bower & Branch?

We do the hard part. Our trees and plants are grown and cared for by only the best, local growers for years before they find their forever home in your landscape. Bower & Branch is known for having hard-to-find, substantial sizes and selection. The quality of our trees and plants are consistent in health and vigor—always ready for immediate impact in your garden and instant curb appeal. We believe in empowering homeowners with the truth about strong, healthy and structurally sound plants that are grown to perform in the ground after they leave the nursery for home delivery, always fresh inventory from the grower.

Audubon is devoted to protecting birds and the places they need, while Bower & Branch is devoted to the growth of true native trees and plants–no cultivars or hybrids. Together, we strive to unite communities in conservation and inspire individuals to cultivate a better world for birds starting in their own backyards, balconies, or patios. By guiding and recommending trees and plants truly native and beneficial to your region, we can really start to make a difference.

What is the definition of Native?

“In the United States, a native plant is defined as one that was naturally found in a particular area before European colonization. Native plants are the foundation of a region’s biodiversity, providing essential food sources and shelter for birds, especially those threatened by the changing climate. Since native plants are adapted to local precipitation and soil conditions, they generally require less upkeep, therefore helping the environment and saving you time, water, and money.” – The National Audubon Society

Learn how you can help birds in your home and community through Audubon’s Plants for Birds program.

Audubon® is a licensed and registered trademark of the National Audubon Society. All rights reserved.

How To Plant

Northern gardeners rejoice! Native to the upper Midwest, New England, and eastern Canada, Northern Blue Flag can handle the coldest winters Mother Nature can hand out. It is very easy to grow, as long as it is given full sun, rich soil, and consistent moisture. Northern Blue Flag will grow in up to four inches of standing water. Because it is poisonous to eat, deer don’t bother it. The roots are toxic, too, and even touching them may irritate some people’s skin. Be sure to wear gloves if you decide to divide your plants (this is an easy way to make more).

How To Water

Water twice weekly for the first 3-5 weeks; then water weekly for the remainder of the year until winter. When you water, water slowly and thoroughly. Watering needs may be altered due to extreme weather conditions.

How To Fertilize

Incorporate Elements Starter Plant food granular form into the soil when planting. If planting in spring or summer start fertilizing late fall using Elements Starter Plant food granular form on an annual basis each late year. Continue this for three years to get your plant well established.

How To Prune

Each fall, just before winter sets in clean up the previous years foliage and compost it. Be sure your perennials are mulched well for winter protection. Two inches of an organic mulch will do the job. Consider leaving the plant debris in place through the winter and doing your clean up on the weather warms in the spring. While it doesn't make things neat and tidy, the debris provides overwintering protection for insects, their eggs and pupae including our native Viceroy butterfly.

Planting Zones

Hardiness Zone: 3-9

How Does Shipping Work?

Size Small (AAA), Medium (A2A), and Large (AA) plants (our Treelings, Shrubs, Bushes, and Perennials) will be shipped directly to your home by a common carrier. Ships in a plant-safe designed box within 5-7 business days.

Our Guarantees


Bower & Branch guarantees customer satisfaction within all product groups and sizes. If for any reason you are not satisfied with the product or experience, you have 90 days from the original date of purchase to request a replacement of the purchased product(s).


Reach out to a Plant Whisperer:

- Email:

- Phone: 866-873-3888

- Or via Online Chat

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