News Feature for Newsletters, Newspapers and Magazines |
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United States Department of Agriculture
Natural Resources Conservation Service
P.O. Box 2890
Washington, DC 20013
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Weeds
How would you define a weed? A nasty plant that causes you angst? A creeping
vine that overtakes your lawn? A further description might be that it is a plant
that is not wanted. Whatever your definition, a weed is simply a plant growing
out of place. To farmers, corn in a soybean field is a weed; to gardeners, last
year’s tomatoes sprouting in the green bean patch can be called weeds.
Generally, but not always, weeds are hard to eliminate.
So, what can you do about these pesky plants that grow where you don’t want
them? There are several ways to control them.
First, consider prevention. Removing undesirable plants before they flower
and develop seeds will reduce the number of weed seeds added to your garden.
Most weeds produce a huge number of seeds. When adding mulch or compost to your
garden, be sure that it is weed free. Old weedy hay may be a cheap source of
mulch, but it could add unwanted weed seeds that you would have to deal with in
future years. While hot composting may kill many seeds, cold composting may not.
Remember too, that many seeds lie dormant in the soil for years, so prevention
will not guarantee a weed free yard.
Secondly, consider control methods. Mulching is effective in preventing weeds
from growing in gardens. Mulch smothers weeds by depriving them of sunlight.
Organic mulches such as grass clippings or compost are effective in improving
the garden soil by increasing the amount of organic matter. Wood chips can
deplete soil nitrogen unless fertilizer is added. To be effective, mulches
should be applied several inches thick--additional mulch may be needed later in
the growing season.
If weeds still poke through the mulch or grow in your lawn, try elimination.
Depending on the type and number of weeds, various approaches can be used. Many
weeds can be removed effectively and safely by physical control methods such as
hoeing or pulling. This usually works for a few dandelions or in vegetable
gardens when weeds are small. Usually, they are easy to pull when mulch is used.
The last method is chemical control. For some hard to destroy or creeping
types of weeds, this can be the only way to get rid of them. When using
chemicals, follow directions carefully. If the chemical is misused, drifts in
the wind, or washes into storm sewers, it could cause death or injury to
desirable plants as well as to pets, wildlife, or people.
If all else fails, live with them! The weed free perfect lawn is a relatively
recent phenomenon. Sometimes the effort needed to maintain a
"showcase" weed free lawn is more trouble than it’s worth. With the
widespread use of bluegrass and the application of broadleaf weed killers
routinely applied to many yards, no wonder it is increasingly difficult to find
that proverbial four-leaf cover!
For more information on Backyard Conservation practices, contact your local
conservation district or the Natural Resources Conservation Service. Or call
1-888-LANDCARE (toll free) for a free colorful Backyard Conservation booklet and
tip sheets.
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- Backyard Conservation is a cooperative project of
- Natural Resources Conservation Service
- Wildlife Habitat Council
- National Association of Conservation Districts
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