Prescott Herbicide by Alligare ( generic Confront) iron Poison ivy Poison ivy The active ingredient (Glyphosate) obstructs production of an enzyme in plants and microorganisms that are indispensable to the formation of specific amino acids Performance Highlights Alligare’s Prescott Herbicide is a broad spectrum for location specific treatment Non volatile formulation for use around sensitive species including bahiagrass and fescue Weeds Prevented: Blackberry Canada thistle Cocklebur Diffuse knapweed Goldenrod Hawkweed Horseweed Kudzu Locusts Milk thistle Musk thistle Nightshade Perennial sowthistle Plumeless thistle Poison ivy Russian knapweed Spotted knapweed Tansy ragwort Western ironweed Western ragweed Yellow starthistle See product label for complete list\ Label SDS