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The two types of Bermuda grass are common and hybrid. Common Bermuda grass is very aggressive and may overrun gardens and walkways, according to The Lawn Bible by David R. Mellor. Compared to hybrid varieties, common bermuda grass is medium maintenance and tolerates low mowing from 1 to 1 1/2 inches high.
Bermuda Grass â Disease â Brown Patch. Brown patch is most prevalent on bermudagrass which has been heavily fertilized when night temperatures are above 68 degrees and day temperature are above 80 degrees. Dead patches of grass may start small but can grow and join together to make patches more than 3 feet apart.