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Hollow Joe Pye Weed, Trumpetweed, Tubular Thoroughwort, Hollow-stemmed Joe-pye-weed - Eutrochium fistulosum


Family: Asteraceae - Aster family Genus Common Name: Joe Pye Weed Native Status: NativeDicot Perennial Herb
Eutrochium fistulosum - Hollow Joe Pye Weed, Trumpetweed, Tubular Thoroughwort, Hollow-stemmed Joe-pye-weed. There are several species that go by the common name Joe Pye Weed. All of them were previously classified in the Eupatorium genus (Thoroughworts); Hollow Joe Pye Weed was Eupatorium fistulosum However, three of the species have recently been reclassified into their own genus, Eupatoriadelphus. I'm sure there was good reason for this reclassification, but it certainly adds to the name confusion.

Hollow Joe Pye Weed is found in 30 of our eastern/southern states. There is much overlap between E. fistulosus and the other 2 species; E. dubius is found on the eastern seaboard, and E. maculatus (Spotted Joe Pye Weed) is the most widespread species, found in 36 states and most of Canada.

Maine - Special Concern; Michigan - Threatened; New Hampshire - Endangered. Some consider it to be a weed.

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Eutrochium fistulosum

Distribution of Eutrochium fistulosum in the United States and Canada:
USDA Plants Distribution Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 28 Jun 2017). National Plant Data Team, Greensboro, NC 27401-4901 USA.

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Site: Walker County, GA Date: 2010-August-17Photographer: Gerald C Williamson
Nikon D60
Sigma DG 120-400mm
The dull pink inflorescence of Eutrochium fistulosum is large and rounded.
Eutrochium fistulosum

Site: Walker County, GA Date: 2010-August-17Photographer: Gerald C. Williamson
Nikon D60
Hollow Joe Pye Weed can be a tall plant, growing from 3 to more than 7 feet tall. The leaves come in whorls of 4 to 7; other Joe Pye species have fewer leaves.
Click on the photo for a larger image
Eutrochium fistulosum

Site: Walker County, GA Date: 2009-August-17Photographer: Gerald C Williamson
Nikon D60
Sigma DG 120-400mm
Butterflies love Joe Pye Weed.
Click on the photo for a larger image
Eutrochium fistulosum

Site: Walker County, GA Date: 2010-August-18Photographer: Gerald C Williamson
Nikon D60
Tamron SP 90MM f/2.8 AF Macro
The blossoms of Eutrochium fistulosum each usually have 5 to 7 pink disk florets. Ray florets are absent.
Click on the photo for a larger image
Eutrochium fistulosum

Site: Walker County, GA Date: 2010-August-17Photographer: Gerald C Williamson
Nikon D60
Sigma DG 120-400mm
The hollow stem of Eutrochium fistulosum is smooth. It is a glaucous purple.
Click on the photo for a larger image
Eutrochium fistulosum

Site: Walker County, GA Date: 2010-August-22Photographer: Gerald C Williamson
Nikon D60
Tamron SP 90MM f/2.8 AF Macro
This clearly shows why this is Hollow Joe Pye Weed.
Click on the photo for a larger image
Eutrochium fistulosum

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2017
Photographs Copyright owned by the named photographer