Stem injection involves injecting a concentrate of glyphosate herbicide into each cane of the JKW stems using specialist equipment specifically designed in the treatment of Japanese knotweed. Japanese knotweed absorbs the glyphosate into the rhizome with a faster absorbency rate than that of foliar spraying. For Environmentally Sensitive Areas the injected herbicide has no effect on the surrounding vegetation and is also safe to use near water. Results will be seen within two weeks. From injection the weed goes dormant and visible signs of foliar decay appear within days after treatment. Any canes missed during the process will be visible within the two-week period and a re-application carried out as part of the treatment process. Treatment is not affected by wind, rain or convection. Stem injection can be used at any time during the growing season.