Lawn Mulched With Peatmoss

Question: Why does a lawn mulched regularly with peatmoss brown out in the summer?

Answer: Most peatmoss is hygroscopic… that is, it sucks up moisture. If there isn’t enough. moisture for both the peatmoss and the soil, the peatmoss will take its share first. Another possible cause for the browning is extreme acidity of the soil. Many brands of peatmoss are acidic. If acidity is suspected, test the soil with one of the simple kits available for only a few dollars. Grass grows best at a pH of 6.0 to 6.9 (near neutral).