Eupatorium rugosum

Also called Richweed

AKA Eupatorium ageratoides, Eupatorium urticifolium, Ageratina altissima
Clusters of white flowers
Sharp-toothed ovate leaves of deep green
Leaves often have a fine-hairy underside
Bloom Time: Midsummer to fall
Flower Size: 8 cm

ZONE:
4

COLOUR:
White

HEIGHT:
80-100 cm

SPREAD:
60-75 cm

Currently Unavailable

Growing and Maintenance Tips:

Often late to emerge in the spring, they grow best in an average, medium to wet, well-drained soil, in full sun to partial shade. Very adaptable to most conditions and become drought tolerant once established. In full sun and extended dry periods leaves may scorch. Pinch back stems in June to encourage a more compact, bushy plant. If planted in deep shade, eupatorium will become leggy and require staking. The overall height and width of eupatorium can vary depending on its growing conditions. Spent flowers can be left for winter interest and food for birds.

Additional Notes about White Snakeroot:

Native to Ontario.

Larval food source for many moths including the Three-lined Flower Moth. Summer nectar source for hummingbirds, countless bees and insects, and many butterflies, including our beloved Monarchs. The seeds are enjoyed by small birds.

While beneficial to many species of fauna, the foliage is toxic to human beings and livestock, especially goats. Its effect is cumulative, building up in the meat or milk of infected animals. Deer and rabbits avoid it, so in a pasture, it may be the last plant standing.