Since it is fast growing, St. Augustinegrass requires frequent mowing during the growing period. It should never receive more than 4 pounds of nitrogen per thousand square feet in one year. At the high rates of fertilization and irrigation, thatch buildup may be a problem. In turn, buildup of thatch can lead to other problems, such as disease and insect damage. St. Augustinegrass is not tolerant of heavy traffic, nor cold weather.
Chinch bugs are often a problem, causing leaves to rapidly begin to wilt and turn brown.
Yellow spots are often associated with chinch bug activity. In addition, brown patch can be a nuisance, creating brown circular patches up to several feet in diameter that usually warrant treatment. Read and follow label directions carefully. Contact your local Cooperative Extension Service center for help in determining the problem and solution if pest damage exists. Following proper lawn management practices, as discussed in this publication, is the best means of preventing and controlling problems in St. Augustinegrass.