Roundleaf thoroughwort, False horehound
Eupatorium rotundifolium
Asteraceae


Landscape Uses:

Wildflower for moist to wet areas.

Ecological Restoration Notes:

Availability:
Rarely grown by native plant nurseries.
Description:
Perennial herb 3 feet tall with hairy stems and small white flowers in showy clusters.
Height:
Typically 3 feet in height.
Growth Rate:
Fast.
Range:
Eastern and central United States south to Martin and Collier counties.
Habitats:
Bogs, swamps, flatwoods.
Soils:
Wet to moist, moderately well-drained to poorly-drained organic or sandy soils, often with acid pH.
Nutritional Requirements:
High; requires rich organic soils for optimal growth.
Salt Water Tolerance:
Low; does not tolerate long-term flooding by salt or brackish water.
Salt Wind Tolerance:
Low; salt wind may burn the leaves.
Drought Tolerance:
Low; requires moist to wet soils and is intolerant of long periods of drought.
Light Requirements:
Full sun to light shade.
Flower Color:
White.
Flower Characteristics:
Showy.
Flowering Season:
May-November.
Fruit:
Wildlife and Ecology:
Attracts pollinators.
Horticultural Notes:
Comments:
Leaves were used by the Timucuan and Creek people to induce vomiting. We have been adding data for this species for central and northern Florida and welcome any feedback or review. If you would like to contribute information or images, please contact George Gann via the IRC staff page.


George D. Gann, 2017
In cultivation, Florida
Keith A. Bradley
Shirley Denton
Shirley Denton