Heat stress is caused by hot summer temps and days upon days of dry, arid weather. Even a healthy, tough lawn can take a beating in those conditions.
When your grass is stressed, footprints that would normally spring back up stay down and limp for longer than 30 minutes.
As stress worsens, your grass tips will brown. At its worst, browning tips progress to brown patches across your lawn.
Your lawn needs nutrients to survive. Before you reach for the fertilizer, though, think again; grass needs to take in a lot of energy to grow, and growing grass mid-summer could definitely stress your lawn out way more than it can handle.
If not tended to, your lawn might try and defend itself against drought and heat stress by going into what is called a “dormant state”. The best things to do when this happens is to keep your lawn watered and stay off the grass as much as possible while it recovers. It’s similar to what you’d do if you got a slip and slide burn.
Feeding your lawn the right nutrients earlier in the season will help your grass strengthen, thicken, and build resiliency to stressors like heat and drought.
If you have cool season grass, you can help your lawn withstand heat stress by overseeding your lawn with a more drought-resistant grass variety in the fall.