Alert: Limited Online Availability

Now that fall is here, we have limited our stock for online purchase. Find Monrovia plants at your local garden center. Pre-order for 2023 will be available later this year. ×

Chocolate White Snakeroot

Eupatorium rugosum 'Chocolate' (Ageratina altissima)

A smaller relative of Joe Pye weed, native to Eastern North America. This selection features strong upright stems of outstanding burgundy leaves for exciting foliage all season. Blooms over many weeks in fall with modest flat-topped snow-white terminal clusters. A valuable butterfly nectar source. Well suited to lightly shaded perennial borders or use as a filler in mixed borders and foundation planting. Herbaceous perennial.
There are very few rules in gardening, but perhaps the most important one is to work within your zone. Choosing plants that grow and thrive in your particular climate is the very first step toward having a beautiful garden . Learn More

Your climate might be too cold for this plant:


Full sun, Partial sun

Keep soil moist to wet.


Due to the seasonal nature of plants, availability at your local garden center is not guaranteed. Give them a call before visiting.

Find more stores near me >
Set Zip to See Prices
More Information
Botanical Pronunciationyoo-puh-TOR-ee-um rew-GOH-sum
LoreA native of the woodland areas of the Eastern United States. Native Americans used the roots to create a remedy for snake bites, leading to the common name of snakeroot. Early settlers were unaware of the poisonous properties of the plant, and would occasionally suffer from a poisoning they called milk sickness, caused by ingesting the milk or meat of a cow that had eaten the plant. Abraham Lincoln's mother, Nancy Hanks Lincoln, died of milk sickness in 1818.
Average Size at MaturityQuickly reaches 3 to 4 ft. tall, 3 ft. wide.
Bloom TimeLate Summer through Fall
Design IdeasWell suited to perennial borders or use as a filler in mixed borders. Combine with other rugged natives and meadow grasses to create an easy-care wildlife garden.
Deciduous/ EvergreenHerbaceous
Flower AttributeLong Bloom Season
Flower ColorWhite
Foliage ColorBurgundy
Garden StyleCottage, Rustic
Growth RateFast
Landscape UseBorder
Light NeedsFull sun, Partial sun
Special FeatureAttracts Butterflies, Dramatic Foliage Color, Easy Care, North American Native Selection
Water NeedsModerate
Watering NeedsKeep soil moist to wet.
Companion PlantsGoldenrod (Solidago), Inkberry (Ilex), Bee Balm (Monarda), Switchgrass (Panicum), Sneezeweed (Helenium)

Follow a regular watering schedule during the first growing season to establish a deep, extensive root system. Remove old flowers to prolong flowering. Cut back to the ground at the end of the season.

This Plant's Growing Zones: 4-9

USDA Cold Hardiness Zone Map

Your USDA Cold Hardiness Zone:

Your climate may be too cold for this plant