There are two important governing factors for mowing turf; the cutting height and the cutting frequency.
Lawn Cutting frequency
Lets talk about cutting frequency first of all. The basic principle is the smaller amount of grass removed on each cut, the happier the turf is. This is why the countries top golf courses mow their greens every single day! This is clearly not practical for most of us, but we should always remember the principal and when your turf is growing more quickly, cut it more regularly. Never remove more than half from the length of the grass in one cut, this puts the turf under considerable stress. A good rule of thumb is cut every 10 – 14 days in spring and autumn, every 5-7 days during summer and every 1 – 2 months during winter.
Lawn Cutting height
The other factor governing mowing turf is the height of cut. There are two different groups of turf grasses; fine leaved grasses, the varieties used on golf greens and many ornamental lawns and courser leaved grasses, these varieties are used on most domestic lawns as well as football pitches.
Fine leaved grasses should me maintained at a height of 6 – 12mm ( ¼’’ – ½’’ ) during the summer months and 12 – 18mm ( ½’’ – ¾’’) in the spring, winter and autumn.
Courser leaved grasses should be maintained at a height of 18 – 24mm (3/4’’ – 1’’) during the summer months and 30 – 36mm (1 ¼’’ – 1 ½’’) in the spring winter and autumn.