Flumioxazin is a contact herbicide absorbed by foliage or germinating seedlings producing symptoms of wilting, necrosis and chlorosis within 24 hours of application. It controls annual and biennial broadleaf weeds and grasses; in regional studies in America, flumioxazin was found to control 40 broadleaf weed species either pre- or post-emergence. The product has residual activity lasting up to 100 days depending on conditions.