Delivery Date Determined By Size
Audubon American Sweetflag and native birds
Audubon Native American Sweet Flag perennial grass product shot
Native American Sweetflag
Native American Sweet Flag up-close
Native Regions map for American Sweetflag
Carolina Wren
Carolina Wren
Yellow Rumped Warbler
Pine Warbler
Audubon American Sweetflag and native birds
Audubon Native American Sweet Flag perennial grass product shot
Native American Sweetflag
Native American Sweet Flag up-close
Native Regions map for American Sweetflag
Carolina Wren
Carolina Wren
Yellow Rumped Warbler
Pine Warbler



  • Evergreen, sword-like leaves that thrive in wet soils
  • The leaves have a distinct spicy-citrus fragrance to them
  • Small, yellowish-cream colored flowers emerge from the leaf in June to July, often inconspicuous
  • The rhizome of the American Sweet Flag has medicinal value, including treatment for nausea, heartburn and more
  • May Benefit & Attract: Wrens, wood warblers
  • 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

    Growth Facts

    • Hardiness Zone: 3 - 6
    • Mature Height: 1-3' tall
    • Mature Width: 2-4' wide
    • Exposure: Full Sun/Part Shade
    • Spacing: 2-4' apart

    Audubon® Native American Sweet Flag

    Bower & Branch Trees and Plants

    Audubon® Plants for Birds: Acorus americanus

    Regular price $69.00
    Delivery Date Determined By Size
    Shipping included
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    Why plant Audubon® Native American Sweet Flag?

    Having a pond on your property is a wonderful way to encourage birds to visit your backyard, and American Sweet Flag is a fine choice for planting pondside. When planted at the edge of large ponds, it may serve as good nesting habitat for ducks and shorebirds; in smaller gardens, it’s simply a nice native plant that looks right at home by the water. At first glance, you might think the strappy foliage belongs to Cattail, but American Sweet Flag is smaller-growing than Cattail, and its leaves have a delightful spicy-citrus fragrance. Some scatter the foliage in cupboards to impart a fresh scent to their linens.

    American Sweet Flag is a cool climate–loving species found most abundantly in Canada, the Upper Midwest, and New England. It occurs along lakes, ponds, and bogs, and can grow in up to one foot of water. American Sweet Flag was valued by native peoples for many purposes. The strong but pliable leaves were woven into mats, baskets, and thatched roofs, while the aromatic roots were used as perfume ad insect repellent. The roots were also ingested to treat a variety of disorders, including headaches, fatigue, heartburn, nausea, colds, and arthritis. Sweet Flag can induce vomiting and hallucinations as well, so please don’t eat it!

    How to use Audubon® Native American Sweet Flag in the landscape?

    American Sweet Flag is often confused with a closely related Eurasian Sweet Flag that has naturalized in the U.S. The American form produces fertile seeds; the exotic variety does not, though it has still managed to spread widely throughout the eastern states and in isolated pockets in the West.

    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 Audubon® Native American Sweet Flag

    Constant moisture is a must for American Sweet Flag. It will even grow submerged in up to 12 inches of standing water. In dry conditions, it may survive, but the foliage will suffer. Give it a full sun position or one in very light shade. Sweet Flag expands steadily via sturdy rhizomes (rootlike underground stems); don’t place it near more delicate plants. In small water gardens, it could be grown in a container to control its spread. The foliage is evergreen and may not need to be cut back in spring, but if it does need a haircut, it will be a pleasant, aromatic task!

    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. Sweet Flag likes lots of water.

    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: 3-6


    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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