Garlon® 3A

  • Herbicide

Superior woody plant and broadleaf weed control

Garlon® 3A herbicide provides superior woody plant and broadleaf weed control while maintaining the integrity of roadsides or rights-of-way. It’s the ideal solution for controlling unwanted weeds, brush and trees beneath electrical power lines; along railroad beds, roadsides and pipelines; and in forestry and wildlife openings, including grazed areas on these sites.

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Flexible, broad-spectrum control

Garlon® 3A herbicide is labeled for foliar applications as well as applications to emerged weeds and brush in standing water or on banks and shores of ponds or lakes found on rights-of-way or production forests. It is rainfast within two hours. 


Garlon 3A is selective to warm- and cool-season rights-of-way grasses, including fescue, brome and native grass species. 

More complete control

Garlon 3A translocates to control the entire targeted plant, from shoots to roots. 

Use sites

Aquatic Sites



Non-irrigation Ditchbanks





Controlled weeds

This product delivers effective weed control against the following:

  • Bindweed
  • Blackberry
  • Broom
  • Cherry
  • Cottonwood
  • Dock
  • Dogwood
  • Kudzu
  • Lespedeza
  • Locust
  • Maple
  • Oak
  • Pine
  • Poison-oak
  • Ragweed
  • Saltcedar
  • Sumac
  • Sweetgum
  • Virginia-creeper
  • Willow

Refer to the Product Label for complete product efficacy information.

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State registrations

  • Registered
  • Unregistered

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Technical Specifications

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™ ® Trademarks of Corteva Agriscience and its affiliated companies. When treating areas in and around roadside or utility rights-of-way that are or will be grazed, hayed or planted to forage, important label precautions apply regarding harvesting hay from treated sites, using manure from animals grazing on treated areas or rotating the treated area to sensitive crops. See the product label for details. State restrictions on the sale and use of Garlon 4 Ultra, Milestone and Opensight apply. Consult the label before purchase or use for full details. Vastlan is not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Always read and follow label directions. © 2021 Corteva.