Pathway Herbicide Specialty Herbicide Ready-to-use herbicide is effective in cut surface applications for killing unwanted trees and preventing undesirable sprouting of cut trees in forest and other non-crop areas. Controls ailanthus, alder, aspen, birch, cedar, cherry, dogwood, elm, firs, green ash, gum, hawthorn, hickory, hornbeam, maple, oak, pecan, persimmon, serviceberry, sourwood, and sweetbay. Use undiluted with tree injectors or in the frill girdle treatment using an axe.