Brown lawns or patches can be very irritating for someone trying to create a healthy, lush, green lawn. They look bad and encourage weed growth. A brown lawn can result from a variety or problems, like dull lawn mower blades, a lack of watering or overwatering, or bug or fungus infestation. It's important to understand what is causing the brown lawn, and then take action to correct it.
Check the lawn mower blades. When grass is mowed with dull blades, the grass tips get ripped off and will turn brown. Repair the blades to make them as sharp as possible.
Water the grass thoroughly if it is brown and appears wilted. Do your best to keep a scheduled watering system throughout the fall and winter seasons to prevent brown spots as much as possible, as they can be caused by stress and change. If the grass is turning brown and is spotty, you are probably overwatering. Adjust your watering needs as necessary.
Make sure that bug damage isn't the problem. If grass is brown and is curling up, it may be the resulting damage of cinch bugs.This happens mainly in wide open sunny areas of a lawn. If the grass is brown and detaching from the roots on its own, that is resulting damage from grubs. Visit your local nursery to get pesticides that suit your grass variety, region and climate.
Make sure the brown lawn isn't caused by fungus. This occurs most with brown patchy lawns, mostly in the early spring and fall. The lawn disease known as "Brown Patch" is caused by a common fungus that may exist in the soil for years. It will appear as small brown spots that grow in warmer weather, forming a ring around healthy grass. To find out if this is the problem, have your grass tested. If this is the problem, apply a fungicide to the affected area to clear it up.
Stop using your fertilizer to make sure that your fertilizer isn't the problem. Some fertilizers can burn the grass, resulting in brown patches. There isn't a quick fix to this problem, as you need to leach out the nitrogen from the grass to make it healthy again. Do this by watering the area thoroughly and constantly. After about a month, try planting new grass seed here. In the long term, you may be better off using a liquid or organic fertilizer.