Weed class: monitor list
Why Is It a Noxious Weed?
This plant is on the monitor list. Please contact the State Noxious Weed Board to report locations or for more information.
How would I identify it?
Perennial herbacous plant that grows 20-60 cm (7.8-23.6 inches) tall.
Flowers are monoecious with male flowers in small drooping heads along the stems tips and female flower 1-2 in upper leaf axils.
Leaves are alternately arranged, 5-12 cm (2-4.7 inches), and mostly bipinnately lobed, with lobes being narrow and irregularly shaped. Leaves are green to grayish in color, smooth to hairy above, and white tomentose on the undersides.
Where does it grow?
Grows in open areas such as fields, pastures and disturbed sites, especially moist, irrigated, poorly drained places. Also grows in dry regions and plains. One location historically known to have occurred in Franklin County. Previously on the noxious weed list in 1989 and 1990.
How Does it Reproduce?
Plants spread by seed and deep creeping rootstocks.