At least where I've lived (except Arizona where I had no lawn) I've never been able to mulch or leave clippings on the lawn the whole season. Once the grass is

At least where I've lived (except Arizona where I had no lawn) I've never been able to mulch or leave clippings on the lawn the whole season. Once the grass is actually in growing season, it grows too fast. If the grass is wet, you can't mulch. If you cut twice as often, the thatch doesn't decompose quickly enough. For me it was just more work now so that I could do more work later.