Any time the lawn is mowed, the plant's
ability to photosynthesize and to produce carbohydrates essential
for root, shoot, rhizome, and stolon growth is decreased. To maximize
photosynthesis and reduce turf stress, remove no more than one-third
of the leaf at one time. If more than one-third of the leaf area
is removed, root growth is temporarily slowed by the plant's inability
to produce sufficient carbohydrates. If the lawn has been severely
cut, the plant uses stored carbohydrates to produce new leaf growth.
If the lawn is repeatedly cut too short, carbohydrate reserves will
be depleted, weakening roots and predisposing the grass to weeds,
diseases, insects, and drought injury.
Only cut one-third of the height of the lawn at a time.