Iron Butterfly Ironweed

Name: Iron Butterfly Ironweed
Brand: American Beauties
SKU: 23658
Price: 16.99 USD
Availability: InStock

Vernonia lettermannii 'Iron Butterfly'

American Beauties®

$16⁹⁹

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In Stock

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Plant Size

Quart Container #2 Container

Product variants

Planting & Care

Where to Plant

Sunlight: Plant this ironweed in full sun, ensuring it gets at least 6 hours of direct light daily. While it can survive in partial shade, insufficient sun will cause the stems to stretch, weaken, and eventually flop over.
Soil: This plant prefers average to lean soil with good drainage and tolerates rocky or clay conditions well. Avoid planting it in highly amended, rich soil, as an abundance of nutrients often makes the stems leggy and unable to support the weight of the flowers.

Watering Requirements

Water consistently during the first growing season to help the root system establish, keeping the soil evenly moist but not soggy. Once established, Iron Butterfly is highly drought-tolerant and handles dry spells well; erratic watering or overwatering in rich soil can stress the plant and lead to floppy growth.

Pruning Tips

Since this herbaceous perennial blooms on new growth, you should cut the old stems all the way down to the ground in late winter or early spring before fresh shoots emerge. If you want an even more compact habit or wish to delay blooming slightly, you can shear the foliage back by one-third in late spring (around late May).

Fertilizer Needs

Skip the heavy fertilizers for this native plant, as it thrives on neglect and lean soils. High-nitrogen fertilizers cause rapid, weak growth that will make the plant topple over; a top dressing of compost in the spring is all the nutrition it typically requires.

Delivery and Shipping

Preorder Shipping Schedule

We ship your plants when it's safe to transport them to your zone. Dates are estimated and subject to weather delays.

Zone 3-4	Week of March 30th
Zone 5	Week of March 16th
Zone 6-12	Week of March 2nd

Shipping Rates

Ships in 3-4 business days • Tracking provided • Weather protected

Under $50	$9.99
$50 - $99.99	$14.99
$100 - $149.99	$16.99
$150 - $198.99	$24.99
$199+	FREE

✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee

A gorgeous tough-as-nails butterfly magnet, the native cultivar Iron Butterfly Ironweed (Vernonia lettermannii 'Iron Butterfly') is just as hardy as its name! Bold, fluffy purple flowers rise tall on very tough stems and sturdy dark-green fine textured foliage.

The dense branching and slender foliage can be increased by pinching back these plants in the spring before they flower. These native butterfly magnets have vigorous, compact growth and loads of blooms! Rich in nectar and pollen for your local bees and butterflies plus many beneficial pollinators in the late summer-early fall.

Spreading and naturalizing throughout Prairies and Woodland settings throughout US zones 4-9. This perennial powerhouse grows 18-24 and wide each year and is quite a drought-tolerant, xeric plant.

How to Use Ironweed In The Landscape

Naturalizing readily throughout moist, rich soil, Ironweed loves Prairie and Wildflower native plantings. Hardy for Rock gardens to Rain gardens and tricky clay soil locations. Also great in Pollinator gardens and Perennial beds. Thriving in a wide range of conditions makes this the perfect plant for any sunny yet troublesome location! Performs beautifully in natural areas and bioswales.

These floriferous blooms are pollinator magnets and a host plant for many species of butterfly larvae! Fantastic for fresh or dried bouquets, so be sure to incorporate Ironweed into your Cut flower garden! Its height makes for the perfect Cottage as a back of the bed and border plant.

Fluffy Intense Purple Blooms
Dark Sturdy Stems & Upright Form
Slender Spear-Like Foliage
Easy Care & Low Maintenance
Hardy Native Wildflower
Butterfly Magnet & Host Plant

#ProPlantTips For Care

These are fast-growing, easy-care natives that thrive in both sunny or part-sun locations and are highly adaptable to most well-drained soils, even clay! Ironweed is even drought-tolerant once established. These long-blooming perennials require very little upkeep, deadhead to remove seed heads or they will self-seed. Ironweed can be planted beneath Black Walnuts without being affected by juglone. Prune back clumps in the early spring.

Full Sun & Partial Shade
Highly Adaptable to Most Well-Drained Soil - Even Clay
Moderate to Low Moisture Needs Once Established
Deadhead After Bloom & Prune Back Early Spring
Deer, Rabbit & Juglone Resistant

For an incredibly tough native and highly beneficial to wildlife! Order your own Iron Butterfly Ironweed from Nature Hills today!

Botanical Name

Vernonia lettermannii 'Iron Butterfly'
Class
- Asterales
Species

lettermannii
Cultivar

Iron Butterfly
Growing Zones

4-9
Height

1-2 ft
Width

1-2 ft
Sunlight
- Full sun
- Partial shade
Growth Rate

Moderate
Flower Color
- Purple
Leaf Color
- Green
- Yellow
Native

Yes
Bloom Period

Late Summer, Early Fall
Does Not Ship To

AK, HI, ID, MT, PR

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Growing Zones 4-9

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Frequently Asked Questions

What USDA planting zones is Iron Butterfly Ironweed hardy in?

Iron Butterfly Ironweed is hardy in USDA zones 4-9. This native perennial thrives across a wide temperature range, from cold northern climates to warm southern regions. Plant it in spring for best establishment before its late summer blooming period.

How large does Iron Butterfly Ironweed grow at maturity?

Iron Butterfly Ironweed reaches 18-24 inches tall and wide at maturity. This compact native perennial thrives in zones 4-9 and naturalizes readily in prairie and wildflower plantings. Pinch back stems in spring before flowering to encourage denser branching and more blooms, available at naturehills.com.

Does Iron Butterfly Ironweed prefer full sun or partial shade?

Iron Butterfly Ironweed thrives in both full sun and partial sun locations. This adaptable native perennial performs well across a range of light conditions in zones 4-9. Plant it in any sunny spot for best flowering and pollinator activity.

How drought tolerant is Iron Butterfly Ironweed once established?

Iron Butterfly Ironweed is quite drought tolerant once established, making it an excellent xeric plant for challenging locations. This hardy native thrives in zones 4-9 and adapts well to various soil conditions, including clay. Plant it in sunny spots where other perennials struggle with dry conditions.

Is Iron Butterfly Ironweed deer resistant or prone to pests?

Iron Butterfly Ironweed is naturally deer resistant due to its tough native genetics. This hardy perennial thrives in zones 4-9 without significant pest issues, making it ideal for low-maintenance landscapes. Plant it in sunny spots where deer browse other plants for best results.

Can Iron Butterfly Ironweed grow in clay soil?

Yes, Iron Butterfly Ironweed thrives in clay soil and other challenging conditions. This hardy native perennial (zones 4-9) is highly adaptable to most well-drained soils, including heavy clay. Plant it in sunny to part-sun locations for best results.

What is the hardiness level of Iron Butterfly Ironweed in cold winters?

Iron Butterfly Ironweed is extremely cold hardy, thriving in USDA zones 4-9. This tough native perennial can withstand harsh winters down to -30°F in zone 4. Plant it in well-drained soil and it will reliably return each spring with vigorous growth.

How is Iron Butterfly Ironweed shipped—bare root, potted, or plugs?

Iron Butterfly Ironweed typically ships as potted plants rather than bare root or plugs. This hardy zones 4-9 perennial establishes quickly from containers and reaches its full 18-24 inch height and spread in the first growing season. Plant in spring after frost danger passes for best results.

Is Iron Butterfly Ironweed native to my area, and does it spread aggressively?

Iron Butterfly Ironweed is native to North America and thrives in zones 4-9, spreading naturally through prairies and woodlands. This cultivar naturalizes readily but isn't considered aggressively invasive. Expect it to spread gradually in moist, rich soil conditions and form colonies over time.