How much sun does Roundleaf Thoroughwort need?

Roundleaf Thoroughwort grows best in full sun conditions.

When does Roundleaf Thoroughwort bloom?

Roundleaf Thoroughwort blooms in June, July, August, September, October, and November.

Where is Roundleaf Thoroughwort native?

Roundleaf Thoroughwort (Eupatorium rotundifolium) is native to AL, AR, DE, FL and 19 more states, per vouchered herbarium specimen records and regional native plant society lists.

What pollinators does Roundleaf Thoroughwort attract?

Roundleaf Thoroughwort draws butterflies and bees.

Is Roundleaf Thoroughwort HOA-friendly?

Roundleaf Thoroughwort is generally an HOA-friendly choice in the right placement, with low maintenance.

Roundleaf Thoroughwort

Name: Pollinator Patch
Author: Pollinator Patch

Eupatorium rotundifolium

Last reviewed: August 2026

Roundleaf Thoroughwort (Eupatorium rotundifolium) is a perennial forb native to AL, AR, DE, FL and 19 more states. It blooms in June, July, August, September, October, and November. The flowers draw butterflies and bees. It reads as an intentional, HOA-friendly planting in the right spot.

Toxicity unknown

Roundleaf Thoroughwort (Eupatorium rotundifolium) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

medium

Size

24"–36" H × 6"–18" W

Bloom

Jun, Jul, Aug, Sep, Oct, Nov

Native to

AL, AR, DE, FL and 19 more states

Pollinators

butterflies, bees

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 437 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

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Roundleaf Thoroughwort is a native Texas perennial that forms upright clumps with rounded leaves and produces clusters of small white flowers from summer through fall. This medium-sized wildflower thrives in full sun with moderate water needs and provides months of reliable blooms. The plant goes dormant in winter, returning each spring with fresh growth.

Growing Roundleaf Thoroughwort

Grow Roundleaf Thoroughwort in full sun and medium water. Mature plants reach 24 to 36 inches tall and spread 6 to 18 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Roundleaf Thoroughwort is an HOA-friendly choice. Maintenance level: low. Tidiness: 2 out of 5.

Works well in: front yard, foundation, street edge, mid zone.

Wildlife value

This plant is excellent for pollinators, attracting both butterflies and native bees throughout its extended blooming period. The long flowering season from June through November provides crucial late-season nectar when many other plants have finished blooming.

Common questions

How much sun does Roundleaf Thoroughwort need?: Roundleaf Thoroughwort grows best in full sun conditions.
When does Roundleaf Thoroughwort bloom?: Roundleaf Thoroughwort blooms in June, July, August, September, October, and November.
Where is Roundleaf Thoroughwort native?: Roundleaf Thoroughwort (Eupatorium rotundifolium) is native to AL, AR, DE, FL and 19 more states, per vouchered herbarium specimen records and regional native plant society lists.
What pollinators does Roundleaf Thoroughwort attract?: Roundleaf Thoroughwort draws butterflies and bees.
Is Roundleaf Thoroughwort HOA-friendly?: Roundleaf Thoroughwort is generally an HOA-friendly choice in the right placement, with low maintenance.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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

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