When does Tall Thoroughwort bloom?

Tall Thoroughwort blooms from July through September, producing dense clusters of small white flowers.

What pollinators visit Tall Thoroughwort?

This native plant attracts bees, butterflies, wasps, and beetles with its late summer nectar-rich flowers.

Where is Tall Thoroughwort native?

Tall Thoroughwort is native to much of the eastern and central United States, from Connecticut south to Florida and west to Texas, Nebraska, and Minnesota.

What growing conditions does Tall Thoroughwort prefer?

This adaptable perennial thrives in full sun to partial sun and tolerates a wide range of moisture conditions from dry to wet soils.

Is Tall Thoroughwort HOA-friendly?

Tall Thoroughwort takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Tall Thoroughwort

Name: Pollinator Patch
Author: Pollinator Patch

Eupatorium altissimum

Last reviewed: June 2026

Tall Thoroughwort is a native perennial forb found across eastern and central United States, producing clusters of small white flowers from July through September that attract bees, butterflies, and other pollinators.

Tall Thoroughwort (Eupatorium altissimum) — Photo: no rights reserved, uploaded by Reuven Martin

Light

full sun

Water

medium

Size

36"–72" H × 12"–24" W

Bloom

Jul, Aug, Sep

Native to

AL, AR, CT, FL and 26 more states

Pollinators

bees, butterflies, wasps, beetles

Browse plants for this ecoregion

Central Oklahoma/Texas Plains Texas Blackland Prairies East Central Texas Plains South Central Plains

Tall thoroughwort is a native perennial that forms upright clumps with clusters of small white flowers from summer through early fall. This sturdy plant grows 3-6 feet tall with a narrow spread, making it useful as a vertical accent in gardens.

Growing Tall Thoroughwort

Grow Tall Thoroughwort in full sun and medium water. Mature plants reach 36 to 72 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Tall Thoroughwort takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Height can appear overgrown in formal settings
May look weedy when not in bloom
Common name includes 'wort' which sounds undesirable

Wildlife value

The late-season blooms provide important nectar for bees, butterflies, and other pollinators when many other flowers have finished. Seeds also feed birds in fall and winter.

Common questions

When does Tall Thoroughwort bloom?: Tall Thoroughwort blooms from July through September, producing dense clusters of small white flowers.
What pollinators visit Tall Thoroughwort?: This native plant attracts bees, butterflies, wasps, and beetles with its late summer nectar-rich flowers.
Where is Tall Thoroughwort native?: Tall Thoroughwort is native to much of the eastern and central United States, from Connecticut south to Florida and west to Texas, Nebraska, and Minnesota.
What growing conditions does Tall Thoroughwort prefer?: This adaptable perennial thrives in full sun to partial sun and tolerates a wide range of moisture conditions from dry to wet soils.
Is Tall Thoroughwort HOA-friendly?: Tall Thoroughwort takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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

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