Roundup Custom Aquatic and Terrestrial Weed Killer Herbicide

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For annual and perennial weed control, Roundup Custom Herbicide delivers exceptional results. It targets more than 190 different weed, brush and vine species, keeping home lawns and business landscapes clear and beautiful. Its active ingredient kills and controls weeds through irrigation systems and handheld equipment and works everywhere from aquatic sites to rights of way. You can also use tank mixtures to increase control of herbaceous weeds and woody brush. When you need broad-spectrum weed control in aquatic and terrestrial areas, use Roundup Custom herbicide. 

How Roundup Custom Herbicide Works

Roundup Custom Herbicide contains glyphosate, a chemical ingredient that kills weeds without harming crops. It inhibits the weed's enzymes that are involved in the synthesis of tyrosine, tryptophan and phenylalanine, three important aromatic amino acids. The glyphosate penetrates the foliage of actively growing plants and only works as a postemergent herbicide. You should use Roundup Custom with a nonionic surfactant to improve coverage and control.

Where to Use Roundup Custom

Use Roundup Custom Herbicide in crop and noncrop areas such as agricultural farms and ornamental turf. It's helpful in preventing invasive weed growth near aquatic areas; however, you should never apply this herbicide directly to the water. Otherwise, it could kill fish and other aquatic invertebrates. Apply Roundup Custom on industrial and commercial sites to keep landscapes free of weeds. You can also use it to prevent woody brush from growing in reforestation sites or along roadsides.

Roundup Custom Target Pests

Roundup Custom Herbicide targets numerous weeds that prevent turfgrass and plants from receiving vital soil nutrients and sunlight. Apply this herbicide as a handheld injection to control hemlock, knotweed and Canadian thistle. It also targets other species such as:

  • Barnyardgrass
  • Bluegrass
  • Chickweed
  • Crabgrass
  • Fleabane
  • Foxtail
  • Nightshade (black)
  • Ragweed
  • Smartweed
  • Velvetleaf

Roundup Custom Features and Benefits

  • Controls a variety of weed species
  • Useful in rights of way, agricultural sites, commercial landscapes and home lawns
  • Kills the weeds without killing the plants
  • Can be used as an injection or with irrigation and handheld sprayers
  • Useful with compatible tank mixtures and nonionic surfactants

Application Tips

  • Do not apply directly to water.
  • Avoid contact with foliage, green stems and exposed nonwoody roots of desirable plants.
  • Apply only to greenhouse weeds when desirable vegetation is not present.

Enjoy a Weed-Free Lawn and Field With Roundup Custom

Roundup Custom Herbicide is a useful herbicide and kills up to 200 different weed species. It targets both annual and perennial weeds, offering broad-spectrum control throughout each season. Because this herbicide only works on actively growing plants, you'll need to use a pre-emergent product for weed prevention. However, Roundup Custom is more than enough to combat post-emergent weeds in many settings. If weeds threaten your lawn or crops, round them up with Roundup Custom herbicide.


It is a violation of Federal Law to use this product in a manner inconsistent with its labeling. For any requirements specific to your State or Tribe, consult the agency responsible for pesticide regulation.


For additional information on this product please reference the Material Safety Data Sheet and Product Label listed below.

Active Ingredient(s)

Glyphosate 53.8%

Target Weeds

Annual weeds, perennial weeds, barley, barnyardgrass, bittercress, brome, buttercup, cheatgrass, chickweed, cocklebur, crabgrass, cupgrass, fiddleneck, fleabane, foxtail, geranium, goosegrass, groundsel, henbit, itchgrass, johnsongrass, knotweed, kochia, lambsquarters, morningglory, mustard, oats, panicum, pennycress, pigweed, ragweed, red rice, ryegrass, sandbur, shattercane, smartweed, sorghum, spurge, sunflower, thistle, wheat, witchgrass

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