Perennial PepperweedLepidium latifolium
BACKGROUND: Native to southern Europe and western Asia, perennial pepperweed is commonly found in wet drainage areas of waste areas, ditches, roadsides, and crop lands.
Other common names: Tall whitetop, broad-leaved peppergrass
DESCRIPTION: Perennial pepperweed grows from one to six feet high. It has spreading lateral rootstocks. Leaves have smooth to lightly toothed margins. Stems and leaves are waxy. White flowers form dense clusters at the end of branches. Flowering takes place from summer into early fall.
CONTROL: Biocontrol research is in early stages. Select herbicides can offer fair to good control when applied to actively growing plants upto pre-bloom. Contact your local state or county weed specialist for specific updated information.