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Monday 28 February 2022

The Lawncare Guide - March

How to cut the grass 

This is the month when the grass starts growing strongly and needs regular mowing. Now you might ask why you should be told how to cut grass. Well, it’s not just as simple as lowering the height with each successive cut, although of course that’s a part of it. Grass needs mowing a little at a time and, depending on the type of grass and its different uses, at different frequencies. 

The aim is to remove a third of the available leaf each time you mow, allowing the grass time to recover from the cut. Leaving the majority of the leaf intact allows photosynthesis to turn compounds such as water into food for growth. 

Take off two thirds or more and you’re exposing the grass plant to disease attack as it becomes weaker, thinner and showing yellow in colour. You also need to consider the type of grass being cut, the cut height and frequency of mowing. Ornamental grass in summer should have a cut height of 5 – 10mm and be mowed every two or three days. Leisure grass 15 – 20mm summer cut every three of four days and utility grass 25mm every six or seven days. 

Remember, these are yardsticks and not hard and fast rules because it depends on weather conditions and the extent of the growth. Mowing when the surface is dry will be easier and prevents the mower blocking, unless you’re using a garden tractor that’s designed to cut in the wet as well as the dry. So, over the next three months reduce the cutting height slowly until you reach the desired height for the summer cutting, then as winter approaches you start raising the height again. 

Other lawn tips for March are to ‘over-seed’ by raking with a tine rake and applying seed for new growth. On a large lawn lightly scarify with a walk-behind scarifier or one that attaches to your garden tractor and then apply the seed. Watch out for disease and weeds and treat where needed.

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