This concentrated herbicide contains 41 percent glyphosate for powerful control of existing unwanted vegetation. The low odor water based formula becomes rainproof within hours and effectively controls annual and perennial weeds as well as trees vines shrubs cattails water hyacinth water primrose and duckweed. Ideal for outdoor use on driveways around the home flower beds gardens vegetable gardens lawn renovation projects and edging, one quart makes up to 21 gallons of spray solution for excellent coverage and value. Replant flowers one day after treatment and seed new lawns seven days after application.