Do you water after fertilizing?
Ava Hall
Published Apr 09, 2026
It depends on the fertilizer. Some lawn foods perform better when you water them in right after applying, while others—such as some weed-and-feed products—need to be watered a day or two after fertilizing. It all comes down to this: Check the product directions on the bag—they'll tell you when to water.
How long should you wait to water after you fertilize?
At Master Lawn, we typically say to wait 24 hours before watering your lawn after fertilizing. But it is important to make sure that it does receive a good watering session soon after that 24 hour waiting period. Watering helps the fertilizer to activate and to break down and begin feeding nutrients to the lawn.Are you supposed to water after fertilizing?
If your lawn gets liquid fertilizer, wait until it dries before watering, about 2-4 hours. If it's granular fertilizer, water right away. One exception: if you also got spot weed treatments at the same time, wait for that to dry before watering, or the water will wash off the weed killer before it can work.What happens if you don't water after fertilizing?
Fertilizer RunoffIf you leave fertilizer sitting on your lawn without watering it into the soil for a period of days, you run the risk of losing some or all of your fertilizer to the first heavy rain that hits your lawn. In addition to wasting your time and money, this runoff can pollute nearby waterways.