Keys to Tree and Brush Control

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Whether it's CRP, pastures or fence lines, volunteer trees and encroaching brush can be something that we forget to manage.

Brush has a way of sneaking up on us. Several years of neglect can substantially increase the cost of removal or control. A preventive approach will help keep undesirable trees and other woody plants -- and removal costs -- in check.



Spraying before full leaf expansion significantly reduces herbicide uptake and, ultimately, results. Treating too early might burn off the new growing buds, but without adequate herbicide absorption and translocation throughout the target plant, the root system will still be alive.




Whether spraying by air or by ground, coverage is extremely important. Trees and brush need good coverage on all sides of the tree for effective control.

From a plane or helicopter, we recommend a minimum of 3 gallons per acre (GPA) of total spray volume (5 GPA for large trees), 15 GPA if spraying with a ground rig.

If treating individual plants using the high-volume foliar method outlined below, treat the entire plant including the crown, but not to the point of runoff – again, coverage is key to effective control. 




Always include a non-ionic surfactant (NIS) at 1 qt/100 gal.

Do not use crop oil or MSO in the mix.



Mowing and Burning

If you plan to follow up with a prescribed burn or by mowing or shredding, delay these practices at least 6 months after the herbicide application to allow for maximum activity. Depending on initial herbicide results, these follow-up methods can help finish the kill on weakened plants.

Likewise, allow at least on full growing season after mowing or shredding brush before applying a herbicide to ensure adequate regrowth and leaf surface area for improved herbicide uptake.

If target brush plants have been repeatedly mowed over several years' time, allow additional time for regrowth and expect follow-up herbicide applications. While mowing removed top growth, the plant's root mass continued to live and expand below the surface. Multiple herbicide applications likely will be necessary to completely kill the roots.



Herbicide Control

Remedy® Ultra herbicide has very good activity on deciduous trees and can be used on trees ranging from 1 foot in height to 25 feet in height. Although Remedy® Ultra controls some broadleaf weed species, consider tank-mixing with 1.5 pints of GrazonNext® HL herbicide per acre to broaden the control spectrum.

Remedy® Ultra is not a Restricted Use herbicide and is available in 1-gallon and 2.5-gallon jugs and in 30-gallon drums. 


Choose the right rate according to tree size:

  • Trees under 3 feet tall: 1 pint of Remedy® Ultra per acre
  • Trees 3 to 8 feet tall: 2 pints of Remedy® Ultra per acre
  • Trees 8 to 20 feet tall: 3 pints of Remedy® Ultra per acre
  • Trees greater than 20 feet tall: 4 pints of Remedy® Ultra per acre


High-volume foliar (leaf-spray) applications using a hand wand:

  • Prepare a 1% solution = 1.25 fluid ounces of Remedy Ultra in 1 gallon of water
  • For larger tank sizes
    • Mix 1 quart of Remedy® Ultra in 25 gallons of water + 1 pint of NIS
    • Mix 1 gallon of Remedy® Ultra in 100 gallons of water + 1 quart of NIS
  • Apply the 1% solution to individual brush plants, taking care to cover all leaves, but not to the point of runoff.


Rotation Restrictions:

Remedy® Ultra has an extremely short residual, allowing for flexible rotation into crops, and making it a good option for Conservation Reserve Program (CRP) acres.

Flexible application options make Remedy® Ultra a great option for maintaining valuable fence lines, controlling small, emerging brush problems or for renovating large tracts overgrown with mature trees.

There are no grazing restrictions for any class of livestock. Hay harvested from grass treated with Remedy® Ultra can be sold off farm, however, do not harvest hay for 14 days after application.

Label precautions apply to forage treated with GrazonNext® HL and to manure from animals that have consumed treated forage within the last three days. Consult the label for full details.


Product Pages

Visit the product pages to learn more about the products mentioned in this article.

Remedy® Ultra herbicide product page

GrazonNext® HL herbicide product page



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™®Trademarks of Dow AgroSciences, DuPont or Pioneer, and their affiliated companies or their respective owners. Milestone 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. State restrictions on the sale and use of Remedy Ultra apply. Consult the label before purchase or use for full details. Always read and follow label directions.