Helena Crossbow CROSSBOW GALLON Herbicide 1 gal - Crossbow herbicide is a low volatile weed and brush herbicide. It is for the control of most kinds of unwanted trees and brush. It also is used for annual and perennial broadleaf weeds on rangeland, permanent grass pastures, conservation reserve program (CRP) acres, fence rows, non-irrigation ditch banks, roadsides, other non-crop areas and industrial sites.