How much sun does Prairie ironweed need?

Prairie ironweed grows best in full sun conditions.

When does Prairie ironweed bloom?

Prairie ironweed blooms in July, August, and September.

Where is Prairie ironweed native?

Prairie ironweed (Vernonia fasciculata) is native to CO, IA, IL, IN and 12 more states, per the World Checklist of Vascular Plants (Kew).

What pollinators does Prairie ironweed attract?

Prairie ironweed draws bees and butterflies.

Is Prairie ironweed HOA-friendly?

Prairie ironweed is generally an HOA-friendly choice in the right placement, with moderate maintenance.

Prairie ironweed

Name: Pollinator Patch
Author: Pollinator Patch

Vernonia fasciculata

Last reviewed: August 2026

Prairie ironweed (Vernonia fasciculata) is a perennial forb native to CO, IA, IL, IN and 12 more states. It blooms in July, August, and September. The flowers draw bees and butterflies. It reads as an intentional, HOA-friendly planting in the right spot.

Light

full sun

Water

medium

Size

36"–60" H × 24"–36" W

Bloom

Jul, Aug, Sep

Native to

CO, IA, IL, IN and 12 more states

Pollinators

bees, butterflies

Deer

Resistant (per Prairie Moon Nursery)

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 432 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

Browse plants for this ecoregion

High Plains Central Great Plains Central Irregular Plains Northwestern Glaciated Plains Northwestern Great Plains Great Plains Northern Glaciated Plains Western Corn Belt Plains Northern Lakes and Forests North Central Hardwood Forests Driftless Area Southeastern Wisconsin Till Plains Central Corn Belt Plains Eastern Corn Belt Plains Interior River Valleys and Hills

An upright perennial forb with narrow lance-shaped leaves and dense, flat-topped clusters of small, deep magenta-purple flowers in mid to late summer. Prefers moist, fertile soil but adapts to average garden conditions.

Growing Prairie ironweed

Grow Prairie ironweed in full sun and medium water. Mature plants reach 36 to 60 inches tall and spread 24 to 36 inches wide. Expect moderate maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Prairie ironweed is an HOA-friendly choice. Maintenance level: moderate. Tidiness: 3 out of 5.

Works well in: mid zone, backyard only.

Tall, upright habit can look unkempt without staking or backing plants in prominent locations

Wildlife value

Vividly colored flower clusters are a strong nectar draw for bees, butterflies, and migrating monarchs.

Common questions

How much sun does Prairie ironweed need?: Prairie ironweed grows best in full sun conditions.
When does Prairie ironweed bloom?: Prairie ironweed blooms in July, August, and September.
Where is Prairie ironweed native?: Prairie ironweed (Vernonia fasciculata) is native to CO, IA, IL, IN and 12 more states, per the World Checklist of Vascular Plants (Kew).
What pollinators does Prairie ironweed attract?: Prairie ironweed draws bees and butterflies.
Is Prairie ironweed HOA-friendly?: Prairie ironweed is generally an HOA-friendly choice in the right placement, with moderate maintenance.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Prairie ironweed? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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