In doing quick reading in the past ,it's been noted that cutting the grass length between 2 1/2 to 3 1/2(or so) inches would be best for the grass blade roots. (they would also be longer and stronger) and less likely to be prone to desease, and retain moisture better. So now using the reel mowers that top out at about 1 1/2 inches to 2 inches,how then can the grass blade roots grow longer and stronger and retain moisture when the sun would now 'get through' the short grass.....years and years ago before rotory mowers, thats about all there was, was reel mowers that cut at a real low grass height and the yards were pretty decent then weren't they? so whats the real answer on grass height, 1-1/2" with a reel mower or 3"(or so) with a rotary mower on the same yard/grass?.....could it be that the shear like cut of the reel mower vs. the rip cut of the rotary blade that the grass blade would 'heel' faster therefore retain the moisture in the grass leaf blade?...idk here i'm guessing.