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Sweet Joe-Pye weed

Sweet Joe-Pye weed

Eutrochium purpureum
A tall native perennial wildflower of moist meadows and woodland edges across eastern North America, producing large domed clusters of vanilla-scented pink-purple flowers in late summer - among the most reliable late-season nectar sources for monarchs, swallowtails, skippers, and native bees. Formerly classified as Eupatorium purpureum.
Native: 34 US states + 1 CA province
Climate fit: broad (87/100)
Pollinator
Focal point
Structure
Light
Full sun / Part sun
Water
Consistent moisture
Mature size
5-7 ft tall · 4 ft apart
Hardy in zones
4a-9b
very cold to frosty winters
AHS heat range
1-11
Plant range authored in AHS heat-zone terms.
Native in Illinois
Yes

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Native across 35 US states and Canadian provinces - a wide-ranging part of North America's plant communities.

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
Well-suited today and still thriving in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

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Focal point
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Focal point
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Pollinator

Educator packet

Plant packet
Sweet Joe-Pye weed educator packet
A tall native perennial wildflower of moist meadows and woodland edges across eastern North America, producing large domed clusters of vanilla-scented pink-purple flowers in late summer - among the most reliable late-season nectar sources for monarchs, swallowtails, skippers, and native bees. Formerly classified as Eupatorium purpureum.
Scientific name
Eutrochium purpureum
Plant type
perennial
Hardiness
4a-9b
Light
full-sun, part-sun
Moisture
consistent
Spacing
48 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.

Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Sweet Joe-Pye weed (Eutrochium purpureum). Retrieved 2026, August 20, from https://plotwright.com/plants/eutrochium-purpureum
Sources used for this record
This record is compiled from the sources below.
NC State Extension Gardener Plant Toolbox
University extension service
USDA PLANTS Database
Government data source
Lady Bird Johnson Wildflower Center Native Plant Database
Botanical research database
GBIF
Botanical research database
Wikimedia Commons
Photo · CC BY 2.0