Caring for New Sod: Advice from Paul Hynek

As landscapers, one of our favorite parts of finishing a project is installing sod. There’s nothing like watching a yard go from bare dirt to a finished, bright green lawn in a single day. It transforms the entire property instantly.

But here’s the reality most homeowners don’t realize:

Sod lives or dies based on watering in the first few weeks.

I’ve seen beautiful new lawns fail—not because the sod was bad, but because people simply didn’t understand how much water it actually takes to establish roots.  Sod is an investment. And like any investment, it needs proper care!

Here’s what I tell every client.

Watering: The Most Important Step

Underwatering is the number one cause of sod death. Not pests. Not soil. Not installation. Water.

New sod has a very short root system. Until those roots grow into the soil beneath, the grass is almost completely dependent on surface moisture.

That’s why watering correctly—especially in the beginning—is critical.  

The First Day

After installation, watering should begin immediately.

The goal is saturation. The sod and the soil beneath it need to be thoroughly wet— like stepping onto squishy wet carpet.

A good way to check:

• The sod should feel spongy underfoot.

• You should be able to lift a corner and see moisture reaching the roots and about two inches into the soil below.

• In some cases, you may even see brief standing water—that’s okay as long as it drains quickly.

On the first day, watering every few hours is important, especially in warm weather. A good rule of thumb is one inch of water per day which takes about four hours total on average, which we do in 20 minute increments.  Areas near driveways, sidewalks, or buildings often dry faster because they radiate heat, so those areas need extra attention.

The First Two Weeks

For the first two weeks, consistency matters more than volume.

Instead of giving the lawn one heavy watering per day, new sod needs frequent, shorter watering cycles to keep it evenly moist throughout the day.

Typically:

• Water 4–6 times per day

• Focus on the hottest part of the day when evaporation is highest

• Stop watering by early evening to reduce the chance of fungus

The soil should stay moist and soggy. If you see shrinking seams or browning, that’s usually a sign the sod is drying out and you're not watering enough.

During this period, keep foot traffic light. If a piece shifts, simply press it back into place.

Weeks Three and Four

At this stage, roots are beginning to establish.

You can start tapering watering to 1–3 times per day and gradually begin spacing watering farther apart.

A simple test:
Lift a corner of the sod. If you feel resistance, roots are anchoring into the soil, which means you can slowly begin transitioning to deeper, less frequent watering.

After Establishment

Once sod is established, the goal shifts to encouraging deeper roots.

This means:

• Longer watering sessions

• Less frequent watering

• Early morning watering is ideal

Most established lawns need about ¾ to 1 inch of water per week, depending on soil and weather. The key is paying attention. Grass will tell you when it’s stressed—you just have to watch it and look for brown blades!

When to Mow

Most sod is ready to mow about three to four weeks after installation or when grass reaches around 6 inches tall.

A few rules I always recommend:

• Mow when the lawn is dry

• Never remove more than one-third of the blade at a time

• Mow regularly to keep the lawn healthy and thick

And for the first few weeks, avoid heavy use so the roots can firmly knit into the soil.

A Final Thought from Me

If there’s one thing I wish every homeowner understood, it’s this:

The success of sod isn’t decided on installation day. It’s decided in the first two weeks of watering.

That’s why we created a service to help homeowners who don’t have the time or ability to manage watering schedules throughout the day.

We call it Thirsty Earth—a temporary irrigation system we install and automate to ensure new sod receives the right amount of water at the right times. It takes the guesswork out and gives your lawn the best possible start.

Because nothing is more frustrating than investing in a beautiful new yard and watching it struggle simply because it didn’t get enough water.

And nothing is more satisfying than seeing that same yard thick, green, and thriving a few months later.