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How Much Trimec Per Gallon of Water? The Ultimate Guide to Weed Control! (2023)

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If you have a lawn or garden, it’s inevitable that you’ll have to deal with weeds. While some weeds are harmless, others can quickly take over your yard and ruin your hard work. That’s where Trimec comes in – a broadleaf herbicide that can effectively control weeds.

But how much Trimec should you use per gallon of water? In this guide, we’ll walk you through everything you need to know about Trimec, including the right application rate, how to mix it, and some helpful tips for using it effectively.

What is Trimec?

how much trimec per gallon of waterTrimec is a broadleaf herbicide that is used to control a variety of weeds, including dandelions, clover, and chickweed. It works by targeting the broadleaf weeds while leaving your grass unharmed. Trimec is available in both liquid and granular form, and it’s typically applied with a sprayer.

How Much Trimec Should You Use Per Gallon of Water?

The amount of Trimec you should use per gallon of water can vary depending on the type of weed you’re trying to control and the size of the area you’re treating. However, as a general guideline, you should use 1-2 fluid ounces of Trimec per gallon of water.

This will ensure that you’re using a sufficient volume of water to cover the area and that you’re applying the product at the desired application rate.

How to Mix Trimec

How to Mix TrimecMixing Trimec is a simple process that can be done with just a few steps. Here’s what you need to do:

  1. Measure the amount of water you’ll need to cover the area you’re treating.
  2. Add the desired amount of Trimec to your sprayer or mixing container.
  3. Fill the container with the measured water.
  4. Agitate the mixture thoroughly to ensure that the Trimec is evenly distributed.

Tips for Using Trimec Effectively

To get the most out of Trimec, there are a few tips you should keep in mind. These include:

  • Apply Trimec on a calm day when there is no wind to ensure that the product doesn’t drift onto desirable plants.
  • Make sure the weeds you’re trying to control are actively growing, as Trimec is most effective when the plants are actively taking in nutrients.
  • Use Trimec when the temperature is between 60-80°F, as this is the optimal temperature range for most broadleaf weeds.
  • Apply Trimec on a level surface to ensure that the product is evenly distributed and that you’re not missing any spots.
  • Use a sprayer that is calibrated to deliver the desired application rate of product. Calibration is important to ensure that you’re not over or under-applying Trimec.

Frequently Asked Questions (FAQs)

Can I use Trimec on all types of grass?

Trimec can be used on most cool-season grasses, such as fescue, but it should not be used on warm-season grasses like St.

Can I use Trimec in Alaska or Hawaii?

Trimec is not registered for use in Alaska or Hawaii.

How long does it take for Trimec to work?

Trimec typically starts working within a few days, but it can take up to two weeks to see the full effects.

Can I use Trimec on golf courses?

Yes, Trimec is safe to use on golf courses, but it’s important to follow the label instructions and use it only as directed.

Is Trimec safe for pets and children?

Trimec is safe for pets and children once it has dried. However, it’s important to keep them off the treated area until the product has fully dried.


Knowing how much Trimec to use per gallon of water is essential for effective weed control. By following the guidelines outlined in this guide, you’ll be able to use Trimec to keep your lawn or garden free from weeds.

Remember to always read and follow the label instructions, and use Trimec responsibly to ensure the best results.

Avatar for Mutasim Sweileh

Mutasim Sweileh

Mutasim is a published author and software engineer and agriculture expert from the US. To date, he has helped thousands of people make their yards lush and thick.