The Level Green Landscaping Blog

Should You Water Grass in Summer Heat? Smart Turf Tips From The Experts

Written by Douglass Delano | Aug 4, 2020 2:30:00 PM

It’s easy to go a bit water crazy in the summer, dashing out to water our lawns at the hint of a brown blade or two.

But would our lawns care if we took some time off to hit the beach or play some golf?

How important is watering turf in the summer?

Put down the sprinkler and let’s take a look.

Is Your Grass Brown? Don’t Panic — It Might Just Be Dormant

Just because your grass is turning brown doesn’t mean it’s dead.

Grass has a lifecycle, and that includes going dormant when water is scarce. 

The grass blades might turn brown, but the plant is still alive. It’s just conserving water so it can survive the drought.

Here in our area, we have a mixed bag of turf types, mostly fescue and perennial rye grass.

Neither are drought tolerant, so they need water to stay healthy. But not constant water.

Watering Grass in Summer Heat: Pros & Payoffs

There are definite benefits to watering during hot weather, especially on high-visibility lawns.



If you keep your lawn irrigated, you’ll likely see:

  • A greener, lusher appearance that improves curb appeal
  • Healthier turf that can better resist weeds
  • Less stress on newly established grass areas

So yes — watering can help. But don’t assume every blade of grass on your property needs it.

What Happens If You Stop Watering Grass? Understanding Dormancy vs. Stress

If you stop watering in the summer heat, it’s not the end of the world.

Your lawn won’t stay that bright springtime green all summer. But how green do you really need it?

Once grass is established, it adapts to its environment. It knows the seasons and changes how much energy it puts out.

When it turns brown, that means it’s putting its efforts into strengthening its root system, as opposed to greening up its leafy blades. 

When you dash in to “rescue” your lawn with water, you’re suddenly raising its expectations. It realizes it’s going to get water, so it starts depending on it. 

Now you have to keep it up.

You’ve kind of created a monster.

Leave it alone, and it will live its normal life cycle, shutting down a bit when it gets hot and dry, and bouncing back if you follow good maintenance practices. (More about that in a minute.)

Summer Lawn Watering Advice for Commercial Property Managers

Most commercial properties don’t have full irrigation systems — and that’s okay. It just means being smart about watering strategies.

Watering turf in summer heat? Consider these tips:

  • Have irrigation? Use your smart controller to deliver the minimum water needed to keep turf healthy. That’s one of the major perks of an irrigation system — precision. Take advantage of it.
  • No system? Focus water where it really matters: high-traffic and high-visibility zones like entrances or courtyards. Those strips of grass along the woods or behind the dumpsters? Let them fend for themselves.
  • Apartment complexes or campuses? Same logic applies. Don’t waste water on underused zones — let turf go dormant where it makes sense.

HOA Lawn Watering Habits: A Friendly Heads-Up

Here at Level Green, we do the maintenance at many HOA properties, and while our crews are on site mowing and weeding, we see lots of homeowners pouring on the water. 

If you’re hand watering, you’re likely wasting a lot of time and water.

Chances are, if you’re watering grass in summer heat, you’re watering too much. 

Too much water encourages a variety of lawn fungus diseases this time of year. 

The truth? Your lawn probably doesn’t need as much water as you think. It’s OK — even smart — to cut back.

Plan Ahead for Summer Turf Health: Fall Prep Matters

The time to think about watering turf in summer heat is actually way before summer — in the previous fall.

That’s when you establish the healthy lawn maintenance habits that help your lawn get through a summer without watering.

Aeration and overseeding set up your lawn for future success. Fall fertilizing gives your lawn a big nutrition boost as it heads into winter. 

All these help your lawn establish a healthy root system, so it can endure a dry spell in the summer.

There’s enough rain in the spring to green up your grass nicely. 

If you tended to its needs in the fall, your lawn will be healthy enough now to crowd out any weeds trying to take hold

That, combined with proper mowing height, should set it up nicely for whatever summer dishes out. Which brings us to....

Don’t Mow Too Low: Mowing Height Affects Water Needs

Most people mow their lawns too short. These aren’t golf courses. Give your blades a break.

Level Green Landscaping crews mow at a height between 3.5 and 4 inches. The height is tailored to the type of grass in this area — tall fescue. (Note the word “tall.”)

Here’s why mowing taller helps:

  • Taller grass shades the soil, keeping moisture in
  • It blocks sunlight from weed seeds, reducing their growth
  • It helps turf build stronger, deeper roots
  • It simply needs less water

Lower mowing might look tidy in the short term, but it’s harder on the turf in the long run.

Tips for Watering Grass in Summer Heat

If you decide to water your lawn in the summer, follow these tips:

  • Water deeper, longer, and not as often. That encourages deeper, stronger roots. If you water too often, it encourages roots to hang out near the surface. Why should they head deeper in the soil to search for water when you’re serving it up so readily every day? You don’t want shallow, quarter-inch long roots. You want sturdier, healthier roots 3-4 inches long.
  • If you’re watering seven days a week now, cut back to three days a week. But double the length of time you water.
  • Water early in the morning. Watering in the evening encourages diseases and pests.
  • Wait until your grass starts to dry out a little before you water again. It’ll be fine, trust us. 

Environmental Impact of Watering Grass in Summer Heat 

There’s only so much clean water on the planet.

How about cutting back a bit?

Especially in urban environments, you could be washing out fertilizer and chemicals meant to stay in one place. 

If you apply fertilizer then water too much, it will run off. Instead of benefitting your yard, it will run into the closest tributary and cause water pollution.

Change your maintenance routine to adapt to the natural life cycle of your grass. 

Just think about all the fun stuff you can do instead of obsessively watering your lawn. 

Trust Your Turf to Level Green: Smarter Lawn Care Starts Here 

Have questions about how much water your turf really needs? Or how to keep commercial lawns thriving during a DC summer without wasting water?

We can help — with proactive strategies, seasonal planning, and smart irrigation support.

Contact us at 202-544-0968. You can also request a free consultation online for a virtual meeting.

We proudly serve:

  • HOAs
  • Office parks
  • Mixed-use developments
  • Municipal and institutional campuses
  • And other commercial property types

…all across Maryland, Washington DC, and Northern Virginia.

Let’s build a healthy, sustainable lawn care plan — no sprinkler obsession required.