Daylilies work best. They refer to some older varieties as "ditch" lilies for that reason. When I was young the ditches along roadsides were full of orange lilies, beautiful turk's cap "tiger lilies" & native grasses in summer. These lazy, younger generations choose to weed whip and mow everything down than spend a few hours a year weeding and maintaining a roadside garden like us older folks have been doing for decades. I'm happy your interested in a natural solution.
