blueweed
nounEtymology From blue + weed.
› Any of several species of plants with blue flowers:
1
Cichorium intybus (chicory).
2
Echium vulgare (viper's bugloss).
3
Helianthus ciliaris (blueweed sunflower, Texas blueweed).
4
Ageratum houstonianum (flossflower, bluemink, pussy foot, Mexican paintbrush).