Preemergent Herbicides

Eliminate Crabgrass & Other Unwanted Weeds in Your Lawn Timing is Everything!

You want to make sure that your lawn is free from unsightly weeds that compete for nutrients and water in the middle of your turf grass! You want the perfect lawn! The ONE THING that you must keep in mind is when to apply a Preemergent.

Watch the weather forecast! Mark your calendar! Don’t be late! The key to applying a successful application of Preemergent is tied directly to the outside air temperature. Weed seeds in your lawn are dormant in the winter and waiting to germinate as soon as the spring temperatures begin to warm up.

In order to prevent a fresh crop of spring weeds in your lawn, apply Preemergent when the daytime temperatures range between 65 and 70 degrees for four consecutive days. If you miss that window of opportunity, save your time and money and invest in a foliar weed killer instead. Once you see the weeds actively growing in your yard, the Preemergent will not prevent or kill your weeds.

Preemergent Herbicides Will Not Harm Existing Plants or Turf Grasses

Preemergent herbicides are designed to inhibit the germination of weed seeds. Existing turf grass, dormant perennials and other beneficial landscape plants will not be affected by the application. Because these plants and grasses have existing root systems, they will continue to grow and regenerate as the warmer temperatures return.
Water After You Apply Your Preemergent
Granular Preemergent products must be watered after they are spread on your lawn! The water process will not ‘wash away’ the product, but rather activate the herbicide instead. This is what actually inhibits and kills the weed seeds.

Do You Have Less than 5,000 Square Feet of Lawn?

Most Preemergent Herbicides are packaged to treat 5,000 square feet. If you have less than that, save what you do not use on your first application. As you well know, we may warm up for a few days and then quickly revert back to chilly temperatures. Once we return to the warmer days, use the remainder of your Preemergent on your lawn again. This will not harm your lawn and it will prevent any additional late germinating weeds.
Know Your Active Ingredients!

One of the most common ingredients found in Preemergent Herbicides is Dithiopyr, more commonly known as Dimension. As with any Lawn & Garden product, always read the label for cautions and application rates. Most Preemergent Herbicides are for use on ornamental landscapes, established lawns and ornamental turf. Do Not Use on Newly Sodded Lawns.

Three Things You Need!

First, you need a trusted Preemergent Herbicide. Second, you need a spreader. Third, you need to water your lawn after the Preemergent is applied to your lawn. (Fossil Creek Tree Farm & Nursery has Preemergent Herbicide and spreaders for sale. If you do not want to buy a spreader, ask us about our Spreader Rental availability!)