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Boulder 6.3 Herbicide

Usually Ships in 1-2 days
Stop woody plant and broadleaf weed growth with Boulder 6.3 herbicide. With its potent formula, Boulder 6.3 targets numerous weed species in noncrop areas and provides residual control for three months. It controls resistant weeds and prevents regrowth with a single application.

Features and Specifications

Active Ingredient(s) Triclopyr BEE: (3,5,6 Trichloro-2-Pyridinyl)oxyacetic acid, butoxyethyl ester- 83.9%
Weed Killer Broadleaf Weeds Burdock Clover Curly dock Dandelion Field bindweed Lambsquarters Lespedeza Mustard Plantain Purple loosestrife Ragweed Sweetclover Thistle (bull, Canada) Vetch Wild carrot (Queen Anne’s Lace) Aspen Bear clover (Bearmat) Blackberry Ceanothus Gallberry Gorse Hawthorn Huisache* Poison ivy Poison oak Salt cedar Sumac Tree-of-Heaven Wax myrtle Willow
Sale Prohibited CA, WA
Shipping Rate Free
EPA Registration

How Boulder 6.3 Herbicide Works

Boulder 6.3 Herbicide contains triclopyr, a chemical that mimics plant hormones. After an application, the active ingredient eliminates and prevents weed growth in the target areas. Because of its organic nature, triclopyr breaks down into several different compounds before finally breaking down into carbon dioxide. It's slightly toxic to fish and birds depending on the species but is considered safe to use in the target areas.

Where to Use Boulder 6.3 Herbicide

Use Boulder 6.3 herbicide anywhere woody plants and broadleaf weeds invade public and private land. It's efficient at killing weeds in forests and grass pastures, including:

  • Conservation Reserve Program lands
  • Industrial sites
  • Ornamental turf
  • Nonirrigation ditches
  • Rights of way


Target Weeds

Boulder 6.3 Herbicide targets woody plants such as oaks, poison ivy and wax myrtles. It also kills various annual and perennial weeds such as dandelions, ragweed and sweet clover. Other target pests include:

  • Buckthorn
  • Chicory
  • Kudzu
  • Smartweed
  • Sweetgum
  • Yarrow


Eradicate Weeds With Boulder 6.3 Herbicide

Take out unwanted broadleaf weeds and woody plants in noncrop areas with Boulder 6.3 herbicide. With triclopyr as its active ingredient, this herbicide starts to work on contact and provides residual control for three months. It controls weed growth in grass pastures and forests and helps eliminate woody plants along rights of way and nonirrigation ditch banks.


It is a violation of Federal law to use this product in a manner inconsistent with its labeling. Do not apply this product in a way that will contact workers or other persons, either directly or through drift. Only protected handlers may be in the area during application. For any requirements specific to your State or Tribe, consult the agency responsible for pesticide regulations.


For additional information on this product please reference the CDMS label database listed below



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