Brown Patches In Lawn: Common Causes And Prevention For A Healthy Lawn (part 2)

❌Grubs
Grubs often appear underground in most lawns from mid to late summer and cause brown patches by damaging the root system. You could identify grubs and larvae by pulling a small area of turf which is brown patches and around dead grass areas. Pest-infested grass is much more easily pulled up than others since the root is damaged.
The feeding habit of grubs can lead to a uniform area of brown spots in your grass. There are some grub control products available to kill existing grubs, like beneficial nematodes or milky spore, etc.
❌Dog Urine Burns
Dog urine, or other animals like birds, can create brown spots on your lawn since it contains a high amount of nitrogen. Brown spots due to urine burns could be recognized by brown centers surrounded by dark green rings. The best way to solve this problem is to rake the ground and cover it with topsoil and spread seed.
❌Dormancy
Your lawn could be made up of different types of grasses. While cool-season lawns go dormant during the hot weather, some warm-season grasses will go dormant in the winter. Grass will turn brown when it goes dormant. And that's why you'll have some brown patches of dormant grasses whereas others stay green.

Here is some information for your reference, if you have any questions, please contact GREEN ARBOR LANDSCAPING (206) 265-2940 for advice.