How to Water After Fertilization of a Lawn


Fertilize your lawn to provide your grass with the nutrients it needs to stay lush, dense and healthy, thereby warding off the weeds and diseases that may plague less healthy lawns. Water your lawn immediately after fertilizing. This helps to prevent chemical burns to the grass and also carries the nutrients down to the lawn's root level where the grass can best use the nutrients.

Step 1

Wait for a clear and dry weather period. If you're unsure, consult the National Oceanic and Atmospheric Administration's National Weather Service for a forecast.

Step 2

Sprinkle your lawn slightly with water to evenly moisten all of the surfaces of the grass.

Step 3

Apply the fertilizer to your lawn according to the guidelines listed on the fertilizer's label, as potency varies widely by product.

Step 4

Water your lawn with enough water to moisten the soil to a depth of 1/2 to 1 inch. To determine when you have watered the lawn to this amount, the University of Florida Extension Service recommends placing straight-sided cans in several places around the lawn. When water reaches the proper amount is in all cans, you can turn off the sprinkler.

Tips and Warnings

  • Overwatering after a fertilization treatment will carry away the nutrients you just applied so that your grass cannot use them.

Things You'll Need

  • Water
  • Lawn fertilizer


  • "The Lawn Bible: How to Keep It Green, Groomed and Growing Every Season of the Year;" David Mellor; 2003
  • "Lawns: Your Guide to a Beautiful Yard;" Nick Christians, et al.; 2007
  • University of Florida Extension: Let Your Lawn Tell You When to Water

Who Can Help

  • NOAA National Weather Service: Forecasts
Keywords: water lawn, lawn fertilization, lawn care

About this Author

Josh Duvauchelle is an editor and journalist with more than 10 years' experience. His work has appeared in various magazines, including "Honolulu Magazine," which has more paid subscribers than any other magazine in Hawaii. He graduated with honors from Trinity Western University, holding a Bachelor of Arts in professional communications, and earned a certificate in applied leadership and public affairs from the Laurentian Leadership Centre.