Common Ironweed

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If there were awards for best pollinator support, native Common Ironweed would win the day. Clusters of brilliant purple flowers top the tall stems, creating a purple crown. Growing to 6 feet tall, Common Ironweed is a great pick for the back of a border, or the edges of a yard or meadow. Bees of all types love native Ironweed, as do butterflies. (Vernonia fasciculata)
Zones 3 - 9
Bee Friendly
Attract Butterflies
Deer Resistant
Multiplies / Naturalizes
Light Requirements
Full Sun
Half Sun / Half Shade
Mature Height 36-72" tall (3-6 feet) , 24-36" wide
Bloom TimeMid summer to fall

USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

Find Your Planting Zone:


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Plant Information

If supporting pollinators is on your list, native Common Ironweed is a top pick. Clusters of magenta-purple flowers top the branches from mid-summer to fall and it is a pollinator magnet. In fact, the Xerces Society identified it as a special value plant for native bees. It is also the host plant for the American Painted Lady Butterfly. A resilient plant, it’s a good choice for rain gardens, too. Deadhead flowers to reduce self-seeding and to encourage more flowers. In fall, fluffy brown seeds follow spent flowers. Easy to grow, this low-care native species requires only a mostly sunny spot, average soil, and moderate moisture. Cut back by half in spring if a shorter height is desired.

More Information
Associated SKUsAM019714
AM019659 (Plant - 3" Pot) - Out of stock.
AM019676 (Tray of 16) - Out of stock.
Common Name
Common Ironweed
Botanical Name
Vernonia fasciculata
3, 4, 5, 6, 7, 8, 9
Light Requirements
Full Sun, Half Sun / Half Shade
Flower Color
Mature Height
36-72" tall (3-6 feet)
Mature Spread
24-36" wide
Bloom Time
Mid summer to fall
Ships As
Potted Plant
Soil Type
Loamy Soil, Clay Soil
Soil Moisture
Average, Moist / Wet
Wet Sites
Bee Friendly, Attract Butterflies, Deer Resistant, Native, Multiplies / Naturalizes
Ideal Region
Northeast, Southeast, Midwest, West, Southwest, Pacific Northwest
Planting Time
Spring / Summer, Fall
Neonicotinoid Free
Native To
North America
Ships to Hawaii, Alaska & Canada

No longer available this season.

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat.  The ‘Plant Information’ section describes how that item will ship. All perennials and spring-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.

Perennials and spring-planted bulbs are shipped at the proper planting time for your hardiness zone. Perennial and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

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$100 and Over$16.99

Canadian Shipping Charges

Merchandise Shipping
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$25 to $49.99$19.95
$50 to $74.99$24.95
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$100 and Over$39.95

If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. If you have any questions, please call us at (877) 309-7333.

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