The Emerald guide to a gem of a lawn

Cut the grass twice a week, if possible, when the grass is growing vigorously.
Cut in the evening, once a week, during prolonged dry spells in summer to reduce plant stress.
Never cut the lawn lower than 1 inch in height from the soil level.
If the grass has grown tall due to holidays or wet weather, simply raise the cut height at the first cut, then reduce the height at the next cut a couple of days later.
Cut the lawn two days before a treatment is scheduled, and do not cut for two to three days after.
Cutting with a rotary mower is recommended on most lawns.
Make sure the mower blade is kept sharp. Where possible mow in different directions.

Lawns lose 4 gallons of water per square yard every week.
Prevention is better than a cure so water before lawns start to dry out.
Water in the evening or early morning to keep evaporation to a minimum.
Water every three to four days during dry conditions.
Place a measuring jug under the watered area, when the water level reaches 1 inch, this will replace water lost during the week.
Sandy soil will require more frequent watering
Watering after a treatment is recommended if no rainfall occurs within two or three days.