Mt Cuba Center
Mt Cuba Center
Back to list

Ageratina altissima var. altissima ‘Chocolate’

Native Plants

Chocolate White Snakeroot

2 Photos


A Mt. Cuba Center Plant Introduction. This mid-height perennial is perfect for adding contrast to the garden. ‘Chocolate’ thrives in moist soil and partial shade. The dark purple leaves show their best color in full sun, but adequate moisture is needed to keep the leaves from scorching. Chocolate white snakeroot grows approximately 3′ tall and has white, compound inflourescenes that bloom from early September to October. This plant is a prolific self-seeder but unfortunately the seedlings do not have the consistent purple foliage color of the parent. Deadheading may be helpful to prevent unwanted seedlings.


Introduced by Mt. Cuba Center in 1994, Chocolate white snakeroot was selected by Dr. Richard W. Lighty and descended from a plant found in the early 1970s by Hal Bruce, Taxonomist at Winterthur Gardens. ‘Chocolate’ was found to have the darkest foliage of many seedlings grown over a ten year period.

More Details

  • Plant Type
  • Sun/Shade Conditions
    filtered-shade, full-sun 
  • Foliage Character
  • Soil Moisture
    average, moist 
  • Flowering Period
  • Soil PH
  • Flower Color
  • Summer Foliage Color
    green, purple 
  • Other Scientific Names

    Eupatorium rugosum ‘Chocolate’

  • Fall Foliage Color
    brown, green, purple 
  • Fruit/Seed Color