Common Ironweed

Vernonia fasciculata

$29.99

$34.99

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About this Plant

Common Ironweed makes a dramatic late-season statement with tall, upright stems topped by dense clusters of vivid purple flowers. Blooming from late summer into fall, it becomes a magnet for monarchs, swallowtails, and many other butterflies, as well as bees and beneficial insects looking for a rich nectar source. Its height, often reaching 4 to 6 feet, adds strong vertical structure to native garden beds, wet meadows, and the back of borders.

The narrow, lance-shaped foliage forms a lush green backdrop for the bold blooms and tolerates both wet and average soils. While it naturally grows in moist prairies and along streambanks, Common Ironweed adapts well to garden settings and plays an important role in supporting late-season pollinators.

Why Choose Common Ironweed?

Shade-tolerant and thrives in dry woodland conditions
Abundant fall blooms support pollinators when resources are scarce
Tolerates poor soil and drought once established
Attractive arching form adds texture to woodland borders
Easy to maintain and resistant to browsing

Cut back in early summer to encourage bushier growth if space is limited. Divide clumps every few years to control spread and maintain vigor.

Maintenance Tips

Cut back to the ground in late winter to promote vigorous spring growth.
Divide in early spring every few years to control growth and invigorate the plants.
On rare occasion, consider staking taller stems if they being to flop.
Consider cutting back main stems of well-established plants by roughly one half in early summer to manage overall height if this becomes an issue.
Allow seedlings to establish in naturalized areas or remove them to maintain aesthetics in more formal settings.

Details

Soil Types

Soil Moisture

Sun Exposure

Hardiness Zone

USDA 3–8

Plant Type

Flower

Mature Height

Mature Width

Bloom Color

Purple

Bloom Time

Root Type

Fibrous

Common Ironweed

$29.99$34.99

Ecological Benefits

Attracts Pollinators

Provides nectar and pollen for bees and other pollinators.

Attracts Butterflies

A nectar source that draws butterflies throughout the season.

Butterfly Host

Supports butterfly caterpillars as a host plant.

Soil Stabilizing

Deep roots help prevent erosion and stabilize soil.

Deer Resistant

Less likely to be browsed by deer.

Birds

Seeds or berries provide food for birds.

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