A home lawn should be mowed every week.?

This is not always true. The frequency of mowing depends on the type of grass, the climate, and the desired height of the lawn. For example, cool-season grasses such as Kentucky bluegrass and fescue should be mowed once or twice a week during the growing season, while warm-season grasses such as Bermuda grass and zoysiagrass can be mowed less frequently. In hot, dry climates, it may be necessary to mow less frequently to avoid stressing the grass. And, if you prefer a longer lawn, you can mow less often.