How to Mow After Seeding a Lawn


Establishing a lawn from seed is often difficult, and failure is usually due to improper irrigation. However, once your lawn is growing well, it's essential that you time your first mowing correctly. To grow a healthy, thick and weed-free lawn, keep your lawn mowed at an ideal height using a mower that has sharp blades. Also, avoid mowing when temperatures exceed 90 degrees F, and when the ground is extremely wet when you might cause ruts, especially for a new lawn.

Step 1

Keep your lawn moist until the first mowing, paying careful attention on hot, dry and windy days. Newly-seeded lawns often need ¼ an inch of water a day to keep them moist.

Step 2

Mow the grass when it is 3/4 inch higher than your desired height. For instance, if you want to keep your grass at 2 inches, wait until it reaches 2 ¾ inches high. Lawns kept between 2 to 3 inches in height grow thicker and have less weeds.

Step 3

Mow your grass in rows. After the first mowing, mow no more than 1/3 of the height of the grass at a time. For example, if you keep your grass at 2 inches, mow by the time the grass reaches a height of 3 inches.


  • University of Maryland Cooperative Extension: Caring for the Newly-Seeded Lawn
Keywords: mow new lawn, mow seeded lawn, how high mow lawn

About this Author

Melissa Lewis has been a professional writer since 2005. Her work has appeared in various online publications. A former elementary classroom teacher and media specialist, Lewis is also a script writer, with a movie script, "Homecoming," she co-wrote currently in production. She holds a Bachelor of Arts in psychology.