stAugustine yellow circles - Knowledgebase Question

Hamilton, Te
Avatar for almosta3
Question by almosta3
September 20, 2010
What is the cause and treatment of yellow rings turing to reddish brown eventually dying in St Augustine Grass in September and in to winter?

Answer from NGA
September 20, 2010
It's really difficult to diagnose the problem with your lawn without being able to inspect the turf. It might be a fungal disease or what you're seeing might indicate chinch bug damage. Check for chinch bugs by removing the ends of a coffee can, inserting one end into the soil at the margin of suspected damaged areas, and filling with water. Chinch bugs will float to the water surface within five minutes. If you find a large population of chinch bugs, a pyrethrum based insecticide should control them. If you do not find chinch bugs, Dig out a portion of the affected turf and take it to your local cooperative extension office for help with diagnosis. Here's the contact information: Texas Cooperative Extension, 102 N. Rice, Suite E Hamilton, TX 76531 phone 254-386-3919. Good luck with your lawn!

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