These articles are written to apply to the northeastern
corner of Illinois. Problems and timing may not apply outside of this
area. |
Importance of Mowing Often Overlooked
May 4, 2000
With lawns now growing at a rapid pace, mowing becomes a common lawn
care practice. Although typically overlooked in terms of importance, mowing
does have a major influence on lawn quality and potential problems. Thats
why following a few basic guidelines are important to assure lawns are
mowed properly.
Proper mowing height is the first basic guideline to consider. Perhaps
the most common mistake is mistake is mowing lawns too short. For most
situations a mowing height between 2 to 3 inches is suggested. Mow closer
to 3 inches as summer gets closer. Lawns mowed at higher heights tend
to have deeper roots, less weed problems, and look much better.
One of the problems associated with mowing too short is invasions of
weeds, such as crabgrass. Whether a preemergence herbicide (crabgrass
preventer) is used on a lawn or not, mowing higher is an important factor
in keeping crabgrass from developing in lawns.
The second major mowing guideline is to base mowing frequency on the
rate of grass growth. Do not remove more than one-third of the grass leaf
in any one cutting. This may call for mowing more than once a week during
cool, wet weather.
Assuming lawns are mowed on a regular basis, there is no need to collect
clippings. Clippings should readily filter back down into the lawn if
the lawn is mowed often enough, following the rule of one-third. Returned
in this manner, clippings readily decompose (contain 75 - 80 percent water)
and do not cause thatch. Clippings also recycle nutrients, in particular
nitrogen, so less fertilizer is needed.
Finally, use a quality mower with a sharp blade. Selecting a mower can
involve a number of factors, many being personal preference. Reel type
mowers actually give the best cut, but are usually expensive and difficult
to maintain. Rotary mowers are the most widely used kind of mower sold
for home lawn use. Both conventional rotary mowers with bag attachments and mulching mowers
are readily available. A study at the University of Illinois showed mulching
mowers did not provide any additional benefit over conventional rotary
mowers returning clippings assuming proper mowing frequency and lawn fertilizing
was followed. |