For owners of newer homes who have Empire Zoysia grass, here is a nice article by a proponent of that grass.
http://www.laymanstraining.com/lawn.html
I think he over does his criticism of St. Augustine, though. I had Floratam St. Augustine in South Florida for 15 years and with moderate maintenance (fertilizer twice a year, chinch bug sprays, occasional Brown Patch treatment) it was a perfectly good lawn.
The experts talk about the problem of "thatch buildup." They don't say how long it takes to occur to a serious level. I'm hoping it is no worse than with St. Augustine, where it takes at least 5 years for any significant build up to occur. Normally "thatch" is associated with a build up of dead clippings. I would add to that term the situation, after serveral years of growth, where runners start to layer on top of each other, creating a thick "runner mat" below the blades. Apparently "verticutting" is the preferred solution. I would think this wouldn't have to be done more often than every 4 to 6 years.
Any Empire Zoysia experts out there?
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Brockton, MA 1946-49 * Fort Lauderdale 1950-66 * Northern Virginia (Army) 1967-69 * North Lauderdale 1970-72 * Coconut Creek 1973-87 * St. Louis 1988-89 # Northern Virginia (again) 1990-2000 * Destin, FL 2001-08 * The Villages - Amelia/Hadley