Allow 2 to 3 weeks between treatments. Operate the equipment at right angles or diagonal to the first treatments. Too often lawns are cut too close in the hot summer months while they are not growing actively. This alone can kill the grass plant. Fertilizing Calibrate your spreader properly before applying fertilizer.
Problems can result from too little or too much fertilizer, or from applying it at the wrong time.
Avoid using large amounts of fertilizer containing nitrogen. It is better to apply a moderate amount during a few seasons than a lot at one time. The grass plant that has been fertilized heavily with nitrogen is more susceptible to disease. Too little fertilizer is a common cause of an unhealthy lawn. Too much fertilizer will also cause problems, by burning the plants and causing stress or death.