There are many reasons your lawn may have brown spots. We’re laying out the reasons and how to help fix it!
Dogs are the most common culprits. Dog’s urine is high in nitrogen. This concentrated nitrogen “burns” your lawn in the same way that too much fertilizer does, causing brown spots. Urine usually causes your lawn to turn yellow in spots, sometimes with a bright green ring around the edges.
The solution? Water your lawn. The best way to reduce the damage to your lawn is to dilute the urine by saturating the spot with water immediately.
Soil quality can vary in your lawn, and poor soil can occur in patches, causing brown, bare areas or moss.
The solution? Take a screwdriver and push it into the soil. If it doesn’t go easily, your soil is likely compacted. Try aeration to incorporate organic matter in the soil.
Large trees or shrubs usually compete for water and nutrients. In the end trees tend to win. The area under trees is notoriously difficult for growing grass.
The solution? Try mulching areas under trees to help keep moisture in the ground and keep the roots from taking moisture from the grass.
Lawns need one inch of water per week, either from rainfall or watering. Dry, compacted spots are more easily damaged and produce brown spots.
The solution? Water your lawn regularly in the mornings. If you irrigate, make sure your system waters your lawn evenly.
Thatch is a buildup of decaying grass blades that can build up so thick that it chokes out healthy grass.
The solution? Remove thatch if it is more than ½” thick. Read more about thatch and power raking/aeration on our blog!
Grubs are most prevalent in mid to late summer. Larva eat the nutrients from your lawn leaving brown spots.
The solution? Grub control can kill the larva and prevent further damage. Check out our grub page for more info!
Brown patch and other fungal diseases thrive in moist conditions, usually in mid-summer when nights and days are hot and humid and spring when snow melts. They may show up as circular or irregular brown spots, or you may notice a spotting or infected pattern on the blades or a generally dying/thinning out.