blueweed

== English == === Etymology === From blue +‎ weed. === Noun === blueweed (countable and uncountable, plural blueweeds) Any of several species of plants with blue flowers: Cichorium intybus (chicory). Echium vulgare (viper's bugloss). Helianthus ciliaris (blueweed sunflower, Texas blueweed). Ageratum houstonianum (flossflower, bluemink, pussy foot, Mexican paintbrush).