Why should first grass cut be on high setting?

[imd123]

Hi
I know that the first grass cut of the season should be on a high cutting but why? How long should it be until next cut is made?
Thanks to anyone who replies

[Thunderbird+]

Hi imd, The way I see it is, if you cut too much off at once it's too much of a shock to the system and can weaken it and it may turn yellow or worse brown.

Lower the blades gradually and the grass will seem to 'toughen up' and produce more leaves at the base of the plant which will give you a thicker,healthier lawn.

[imd123]

Thanks Thunderbird.
Any other comments anyone?

[janetsflower]

thunderbird is exactly right, nothing to add

[mason01]

Also if you cut to short know while ther is still danger of frost the frost can damage if to short Paul