Here's the dumb of it... Cutting it too short, soon as the temps hit 85 will kill the grass. Most of the folks in the 2" cut mindset, that is what they think they want. These folks are hell bent on KILLING the grass, they HATE lawn, they think if they can just get rid of it that is one less headache... To top it all off, they hire one of us to cut it and... They'll never spend a dime above and beyond, but if they do it's like trying to get blood out of a turnip. That is not entirely true, unfortunately few have found the Lco they really need, either. Because... Once there is no grass, soon weeds take over. And weeds grow FASTER than grass with FAR LESS water! You will have to cut it MORE in summer than if it were all grass. In conclusion... It isn't really that much more expensive to maintain a decent lawn. But, and in all fairness it isn't all their fault either, this game rolls both ways. So as a rule you do need Lco's with more than 3-4 years behind their ears. 5-10 is good for starters, what you need is an Lco who can see PAST the $35 they're getting if they cut it today. You need an Lco smart enough to understand weather patterns, and what effect mowing has on turf. Someone who has witnessed it time after time, year after year, and has learned from it all. That is who you need on the mowing end. Now if they only want me to cut it every two weeks, fine by me, I have some only want it once a month. All of that is no problem, but I cut all of mine at 4" Some are all right with that, others aren't. Works for me.