30. Recycle Grass Clippings |
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Numerous municipalities have begun to refuse to pick up grass clippings
and leaves because of reduced landfill availability. In fact, some
states have banned yard waste in landfills.
Many homeowners are bagging clippings to be sent to a regional
composting facility (where one exists), while others are using mulching
lawn mowers. A mulching mower reduces the size of clippings and
spreads them back on the grass, where they rapidly decompose and
return to the soil.
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Grass clippings are a valuable organic source of nutrients, especially
nitrogen. Some mulching-mower users have found that yearly nitrogen
applications may be reduced by one-fourth when grass is returned to
the turf. |
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Although
mulching mowers and mulching attachments for existing mowers can reduce
clipping size, thus increasing the rate that grass clippings decompose,
you can get the same effect with a normal rotary mower. Mowing on
a regular basis with a sharp blade usually produces clippings that
decompose fairly quickly. |
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In Forth Worth, Texas, participants in the “Don’t Bag
It” program said, on average, they felt that their lawns looked
30 percent better when they let the clippings remain than when they
previously had collected the clippings. Cities with similar programs
report reduced garbage loads and healthier lawns, trees and shrubs. |
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Leaving
clippings on the lawns does not necessarily cause problems with thatch
buildup. You may encounter problems with thatch whether you use a
mulching mower or not. Thatch can be controlled with vertical mowing,
core aerification, and proper watering and fertilization. |
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If
you prefer not to leave clippings on the lawn, or if raking up clippings
is a good job for the kids, you may want to consider using collected
clippings as mulch or as a component in a compost pile (which in turn
will produce nutrient-rich soil conditioners). |
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If
you have recently treated your lawn with herbicides, wait for three
mowings before using grass clippings as mulch. It is possible for
herbicide residues to damage garden crops if you use recently treated
clippings as mulch. If you put clippings in a compost, on the other
hand, pesticides rapidly degrade. |
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