Active Ingredient: Clopyralid


Lontrel® turf and ornamental specialty herbicide provides a high level of turf safety while offering superior postemergence control of clover, dandelion, thistle and dollarweed. Lontrel is labeled for use on both warm- and cool-season turf, but sets the standard for safety to turf in closely mowed bentgrass and Bermudagrass fairways.


  • Controls several weed species, including clover, thistle, dollarweed and groundsel
  • Excellent safety to turf, including use on St. Augustinegrass, closely mowed bentgrass and Bermudagrass fairways
  • Application flexibility in landscape and field nursery situations, including "over-the-top" applications with certain ornamental plants
  • Can be used to provide selective control of broadleaf weeds in new and established plantings of conifers and field-grown ornamentals
  • Do not use on residential turf. Turfgrass and lawn uses are restricted to non-residential sites.
  • Do not use grass clippings from turf treated with Lontrel for mulch or compost

For more information, please see additional information or select from this list of downloadable items:

Technical Info Sheet (270KB PDF)

Lontrel Logo        Black Medic
Weeds Controlled

  • Broadleaf plantain
  • Clover
  • Dandelion
  • Dollarweed
  • Groundsel
  • Horseweed
  • Nightshade
  • Ragweed
  • Thistles
  • Vetch
  • Virginia buttonweed
  • See label for complete listing of weeds controlled