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My lawn looked great, now it's turning brown! Why?
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Kent's Blog

My lawn looked great, now it's turning brown! Why?

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Cultural Practices
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Dollar Spot Disease
Every year about this time here in Denver/Parker CO. The lawns that have been looking good for the past couple of months begin to turn brown and look really bad. The cooler Spring temperatures combined with all the rain we got in May, and fertilizing had the lawns looking really good but now it's beginning to get hot with the temperatures soaring into the 90's. You must increase your watering times to compensate for this heat stress. Instead of watering 3 times a week in the early morning for 20 minutes each, you must water at least 3 times a week in the early morning for 30 minutes each. And if your lawn still doesn't recover, water every day for 30 minutes each in the early morning until it does recover. If this added watering doesn't help, and your lawn actually looks worse with the added watering, it probably has a disease called Dollar Spot. That is a pretty good sign and it's about this time of year that it begins to rear it's ugly head and try to destroy your beautiful precious, green, lush, weed free lawn that you have worked so hard for and spent so much money on making it look beautiful. That's why it's important to water in the early morning and not at night  because this can contribute to disease problems. It's not good for your lawn to stay wet on the surface for extended periods of time. This is where aeration comes in. Poking holes through the thatch layer (located in the root zone) into the soil beneath helps the water to soak down deep into the soil and encourages the roots to go down deep and promote a healthy turf grass instead of pooling on the surface. Then as the day heats up, it creates humidity on the surface of the lawn and and creates conditions favorable for the fungus to grow which causes the disease.  What you want is as the day heats up, for the water to soak down into the soil and for the grass to dry off on the surface keeping the water down deep in the soil where it's needed.  For more lawn tips and pictures and videos of lawn insects, disease and weeds, please watch my E-videos at http://www.wienslawncare .com/Products.html