Eupatorium altissimum

From Coastal Plain Plants Wiki
Jump to: navigation, search
Eupatorium altissimum
Eupa alti.jpg
Photo by Jennifer Anderson, hosted by the USDA-NRCS PLANTS Database
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida – Dicotyledons
Order: Asterales
Family: Asteraceae ⁄ Compositae
Genus: Eupatorium
Species: E. altissimum
Binomial name
Eupatorium altissimum
EUPA ALTI dist.jpg
Natural range of Eupatorium altissimum from USDA NRCS Plants Database.

Common name: tall thoroughwort

Taxonomic notes

Synonyms: none.[1]

Varieties: none[1]


A description of Eupatorium altissimum is provided in The Flora of North America.


It is seen as far noth as CT; stretches south to Florida, and to Texas.[1] It is mostly seen in the midwest on limestone substrates, but uncommon east of the mountains.[1]



It is found in woodlands, old fields, woodland edges, and openings over mafic rocks or calcareous rocks.[1] It is also found in roadside ditches. [2]


E. altissimum has been observed flowering in July and September.[3][2] Flowers from August to November according to Weakley (2015).


Eupatorium altissimum has been observed to host plasterer bees such as Hylaeus mesillae (family Colletidae).[4]

Conservation, cultivation, and restoration

Cultural use

Photo Gallery

References and notes

  1. 1.0 1.1 1.2 1.3 1.4 Weakley, A.S. 2020. Flora of the Southeastern United States. Edition of 20 October 2020. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
  2. 2.0 2.1 Florida State University Robert K. Godfrey Herbarium database. URL: Last accessed: June 2014. Collectors: R. Kral. States and Counties: Florida: Liberty.
  3. Nelson, G. PanFlora: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. Accessed: 9 DEC 2016
  4. [1]