How much to cut at each
mowing depends upon the growth habit of the grass and the leaf texture,
or width of the leaves. Grass survival depends on having adequate
leaf surface for food production through photosynthesis. Mowing too
low removes too much of the food producing area. As the grass literally
starves, the lawn thins and looks poor. Mowing too high can hurt
the appearance or usefulness of the turf.
when the grass is actively growing
You can determine when and how often to mow your lawn by taking
into account the growth rate of the grass during each season and
the desired resulting height of the lawn. Grasses require more frequent
mowing during their active growing period.
Cool-season grasses are most active during the spring and fall while
warm-season grasses are the most active during the summer months.
How much fertilizer and water your lawn receives will also affect
the growth rate.
one-third of the height at a time
Mow frequently enough so that only one-third
of the leaf is removed at any one time. Do not drastically or
suddenly change the cutting height. If the grass has become too tall,
reestablish the recommended height by mowing more frequently for
a while and gradually lowering the mowing height of successive cuttings,
following the one-third rule.