flowers of ageratina adenophora also known as maui pamakani, mexican devil

closeup white flowers ageratina adenophora maui pamakani mexican devil sticky snakeroot catweed crofton weed catspaw thoroughwort glandular eupatorium hemp agrimony background nature floral garden green leaves plant beautiful ornamental wildflower herbaceous asteraceae cluster ageratum blooming adenophorum eupatorieae eupatory noxious wild botany flower summer environment natural botanical horse sweet grass