Scientific Name:
Ageratina altissima
'Chocolate'
Pronunciation:
ad-jur-uh-TY-nuh al-TISS-ih-muh
Common Name:
white snakeroot
Family Name:
Asteraceae
Plant Type:
Herbaceous perennial
Key ID Features:
Leaves opposite, dark green, lance-shaped to elliptic-oval (like stinging nettle), sharp-toothed, taper-pointed, petioles long; flowers small fluffy, bright white, (composites with rays absent) arranged in loose corymbs to 7-10cm across.
Habit:
Upright
Form:
Oval - vertical
Texture:
Coarse
Mature Height:
0.7 - 1.3m
Mature Spread:
0.6 - 1.0m
Growth Rate:
Fast
Origin:
Garden origin, U.S. - northeast
Hardiness Rating:
Zone 4: (-34 to -29 °C)
Exposure:
Full sun
Soil/Growing Medium:
Landscape Uses:
Perennial border, Summer interest
Additional Info:
Leaf Morphology:
Form:
Simple
Arrangement:
Opposite
Texture/Venation:
Soft flexible, Heavily veined, Pinnate venation
Surfaces:
Glabrous
Colour in Summer:
Dark-green, Dark-red
Shapes:
Ovate
Apices:
Acuminate
Bases:
Attenuate
Margins:
Serrate