Rob Routledge, Sault College, Bugwood.org

Hairy willowweed

Epilobium hirsutum

Hairy willowweed (Epilobium hirsutum) is an invasive plant. It is a native of Eurasia and was first detected in northeastern United States.

This state-listed noxious weed is found in damp and waste places where aggressive and dense growth can crowd out native or beneficial species.