Brown or dead patches can be frustrating—they stand out and often seem to appear overnight. Cause varies: dog urine, drought, disease, dull mower blades, or something else. Here’s how to figure out what’s going on and what to do about it.
Dog spots (urine burn)
Dog urine can leave dark green rings (from extra nitrogen) or brown/dead circles (from concentration and salt). The center may be deader than the ring.
What you can do:
- Dilute: Water the spot right after the dog goes to reduce concentration.
- Train or designate: Some people train pets to use a mulched or gravel area instead of the lawn.
- Repair: Rake out dead grass, loosen the soil slightly, add a bit of compost if you have it, then reseed (fall is best; keep it moist until it germinates). See fall lawn care for overseeding timing.
You can’t always prevent every spot, but dilution and repair keep the lawn looking better.
Drought and heat stress
When it’s hot and dry, grass can go dormant and turn brown. It often greens up again when rain and cooler weather return—as long as it wasn’t killed.
What you can do:
- Water deeply when you can (see watering your lawn). During long dry spells, drought-tolerant lawn care has more tips.
- Mow high and avoid heavy traffic on stressed grass. Don’t fertilize during severe drought unless you’re irrigating.
Dull mower blade or scalping
A dull blade tears grass, and the tips turn brown. Scalping (cutting too low) can kill or weaken grass in spots, especially on bumps or slopes.
Fix: Sharpen the blade and set the mower to a proper height (see how to mow like a pro). Reseed or sod any areas that don’t recover.
Disease and other causes
Fungal disease can show up as rings, patches, or irregular brown areas. Identification helps—University of Illinois Extension or a lawn pro can often ID from a photo or sample. Many diseases are encouraged by too much moisture (watering at night, heavy thatch), so improving watering and mowing habits can reduce future problems.
Keeping the rest of the lawn mowed and edged makes the yard look cared for even while you work on problem spots. If you’d like help with the routine cutting and trimming, Wink’s Lawn Care is here. Get a free quote — call or text (217) 487-6264 or send us a message. We serve Champaign, Rantoul, Paxton, Mahomet, St. Joseph, and surrounding areas.