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There are several fungi which attack
Centipede and St. Augustine lawns, but by far the most common is
It can occur at most any time of the year, but is most common in this area in late summer through fall. It is encouraged by high moisture, high humidity, and warm temperatures. Excessive nitrogen fertilization also encourages the problem. Brown patch fungus usually starts out in a lawn as small, circular spots which start to wilt and turn brown. Sometimes the spots will be large when they first appear, particularly in areas that had fungus in the past. As the fungus progresses, the spots grow larger. In St. Augustine grass, the edges of the circles or patches have a yellow color while the inside of the patches are straw colored. This yellow is an indication the the fungus is active and growing. In Centipede grass, the color of the patches is more of a darker brown or grey without the yellow edges. The fungus will continue to be active and cause damage until the
environmental conditions which are causing the problem change or a fungicide is
applied. Things that encourage a fungus problem:
Things you can do to help prevent or control it:
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