Mosses are just lower forms of plant life. They will not be able to compete with healthy growing grass. If you can improve the turf, the moss will disappear. If grass will not do well in this location (too wet, too shady, other??), consider another groundcover. Go to <a href="http://www.agry.purdue.edu/turf/publicat.htm">Turf Publications</a> and read AY-17. Other useful publications there too.<p>Moss is not the problem, it is just a symptom of a problem. Real problem is environment that allows moss to grow. Have taken over a poorly maintained site with moss scattered all through lawn. All moss was gone in 3 months with just proper care of turf. Have had other sites where it is too shady or wet for grass to survive, and you will have moss unless problem(s) are corrected.<p>----------<br>Jim<br>North central Indiana<p><p>