Lady Bird Johnson Wildflower Center - The University of Texas at Austin information

 Native Plant Database

Ageratina altissima var. altissima


White snakeroot


Asteraceae (Aster Family)



Ageratina altissima var. altissima (White snakeroot)
Cressler, Alan
An erect, much-branched perennial up to 4 ft. tall. Large, opposite, pointed-oval leaves. Flowers are tiny, pure white, and in flattish clusters near the top of the stalk.


Image Gallery:

9 photo(s) available

Plant Characteristics

Duration: Perennial
Habit: Herb
Flower:
Fruit:
Size Class: 3-6 ft.

Bloom Information

Bloom Color: White
Bloom Time: Aug , Sep , Oct

Distribution

USA: AL , AR , CT , DE , FL , GA , IL , IN , IA , KS , KY , LA , ME , MD , MA , MI , MN , MS , MO , NE , NH , NJ , NY , NC , ND , OH , OK , PA , RI , SC , SD , TN , TX , VT , VA , WV , WI , DC
Canada: NB , NS , ON , QC , SK
Native Distribution: Eastern Canada to Sask., s. to WV, upland GA & e. TX
Native Habitat: Rich woods; thickets; clearings; shady river bottoms

Growing Conditions

Light Requirement: Part Shade , Shade
Soil Moisture: Moist
Soil pH: Circumneutral (pH 6.8-7.2)
Soil Description: Rich soils.
Conditions Comments: Spreads by seed and can become weedy.

Benefit

Conspicuous Flowers: yes
Attracts: Birds

Last Update: 2014-09-10