How to Prepare Herbicide


Homeowners use herbicides around the landscape to tackle tough weeds in gardens and lawns. Preparing herbicides involves addressing the type of weed problem. Pre-emergent herbicides tackle weeds before germination with systemic action that percolates to the weed's roots. Gardeners apply post emergent herbicides to actively growing weeds that appear above the soil surface. Both types of herbicides come in concentrated forms for mixing at home.

Step 1

Examine and clip a portion of the weed to take to the garden center, where a knowledgeable specialist can recommend the correct product for application at home.

Step 2

Read the instructions on the back of the herbicide bottle to determine the correct ratio of concentrate to mix with water. The garden center may recommend the addition of further herbicides for mixture with another type of herbicide. Write down exact measurements for both types of herbicide to attain the correct mixture.

Step 3

Wear protective gloves and eyewear. Add the correct amount of herbicide to the bottle or tank.

Step 4

Add the recommended amount of water.

Step 5

Tighten the cap on the pump sprayer or bottle. Check the sprayer to ensure that the nozzle is completely closed. Shake the sprayer well to evenly mix the herbicide and water.

Step 6

Spray the herbicide on weeds and grass, wearing protective gloves, eye wear and clothing. Agitate the solution frequently to keep the herbicide from settling to the bottom of the container.

Things You'll Need

  • Gloves
  • Protective eyewear
  • Pruning shears
  • Pump sprayer or spray bottle
  • Measuring cup
  • Herbicide


  • Forest Research Institute: Herbicide 101 for Forest Landowners
  • University of Illinois: Principles of Post Emergent Herbicides
  • University of Rhode Island: How Herbicides Work
  • University of Florida: Preemergent Herbicides for use in ornamentals

Who Can Help

  • Concentration Guide for Herbicides
Keywords: preparing herbicides, herbicide preparation, mixing herbicides

About this Author

S.F. Heron is an avid gardener with three years of experience in online writing and a working background in aviation and earth and ocean sciences. She is published on various sites, including Helium, eHow and Xomba. She holds a Bachelor of Science degree in journalism from the University of Maryland.