For optimum ease, mow often and moderately. If you only mow once or twice a year, you are in for a brutal couple of mows. In the case of your manicured yard, mowing moderately is critical if you cut your grass too short, the roots become exposed to the elements like sun and wind, and you will be cutting the source of water: the blade. In other words, your yard will lose the nutrients it built up in its blades if you cut it below 2. 5 inches. Do not use a tow behind or riding mower to cut materials on slopes at more than a 15 degree angle.