July can turn a nice lawn into a puzzle of brown patches almost overnight. Don’t panic. Before you overwater or do anything drastic, take a breath and do some inspection.
Not all brown patches are created by the same things, and treatment that saves one patch can make another much worse.
Common causes of brown patches
Grub damage: The spongy test
If the brown area feels soft and spongy underfoot, you might have grubs. These white, curled larvae feast on grass roots underground, essentially disconnecting your lawn from its food source. You can often peel back the affected turf like a loose carpet. Grubs also attract moles and skunks that dig up your lawn while hunting for this protein-rich snack.
Summer drought stress: The uniform fade
Drought damage typically appears as a gradual, uniform browning that starts in the hottest, sunniest spots. The grass isn’t dead, just dormant and trying to survive. In the early morning, you might notice the blades folded lengthwise to conserve moisture. This is normal survival behavior for cool-season grasses in Nebraska heat.
Fungal disease: Those mysterious rings
Diseases like brown patch or summer patch create distinct patterns with defined borders. You might see circular or crescent-shaped dead areas, sometimes with a darker “smoke ring” around the edge visible in early morning dew. Unlike grub damage, diseased areas feel firm underfoot.
A wee culprit: Pet spots
Don’t overlook the obvious. Dog urine creates small, concentrated circles of dead grass, often surrounded by a ring of dark green, over-fertilized grass. These spots are usually 6 to 12 inches across and perfectly round. This can be an issue when dogs prefer to conduct their business in the same area over and over.
What to do right now
Step 1: Stop the automatic response
Don’t immediately reach for the fertilizer or turn up the sprinklers. Both can make disease problems worse and stress drought-dormant grass even more.
Step 2: Investigate the pattern
Walk your entire lawn and note where the brown areas appear. Are they in sunny spots (likely drought)? Random patches (possibly disease)? Areas pets frequent? The pattern can tell the story.
Step 3: Do the pull test
Gently tug on the brown grass. If it pulls up easily with no roots, you likely have grubs. If it’s firmly rooted but brown, you’re probably dealing with drought or disease.
Treating brown patches
For grub damage: Professional grub control is most effective in late spring to early summer, targeting young larvae. By the time you see damage in July, it’s often too late for this year. Treating then helps prevent next year’s problems.
For drought stress: Deep, infrequent watering in early morning can help grass survive, but don’t expect immediate greening. Dormant grass often stays brown until fall temperatures return.
For disease: Improve air circulation by pruning nearby shrubs, avoid watering in the evening, and reduce nitrogen fertilization. Sometimes the best treatment is patience while you wait for cooler weather.
As always, prevention beats treatment
The lawns that sail through summer heat stress are the ones properly prepared in spring and fall. Fall fertilization, spring aeration, and proper mowing height build the resilience that prevents most summer headaches.
When in doubt, call us. A trained eye can distinguish between these issues quickly, potentially saving you time, money, and lawn damage from the wrong treatment.
