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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 white snakeroot (Ageratina altissima ‘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 inflorescences that bloom from early September to October. For a dark foliage interplay, combine with Espresso wild geranium (Geranium maculatum ‘Espresso’), while the bright green foliage and dark stems of Bowman’s root (Gillenia trifoliata) offers contrast and complements the dark foliage and stems of Chocolate white snakeroot. 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. Formerly known as Eupatorium rugosum ‘Chocolate’. Zones 4-8.

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 white snakeroot 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