Gly Star® Plus is a non-selective post emergence herbicide used to destroy over 100 weeds. The active ingredient in Gly Star® Plus is glyphosate. The herbicide also contains 14 percent; surfactant to help the formula cling to the weed foliage. This herbicide works by absorbing into the weed leaves and stems. The herbicide then trans-locates into the root system. Visual effectiveness can be seen within 2 days, but it may take 7 or more days on perennials and woody brush. See product labeling for application and mixing ratio.