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Old 09-01-2005, 03:21 PM
Sean Adams Sean Adams is offline
Join Date: Jun 1999
Location: Pennsylvania
Posts: 3,621
Tip Of The Day - 9/1/05 - Mowing as Weed Control

Mowing a lawn can actually be a type of weed control - if done properly. High mowing can actually help reduce weed populations - it has been shown that it even works to slow down the growth of many annual weeds. The taller grass helps shade and cool the soil which restricts the germination of annual weeds. And if annual weeds do appear, mowing can help control the spread of the weeds if you mow regularly the seed heads will not develop and cannot become established.
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Old 09-04-2005, 01:48 PM
timturf timturf is offline
LawnSite Bronze Member
Join Date: Jan 2003
Location: central virgina, transition, plant hardy zone 7a, and heat index zone 7
Posts: 1,526
Proper mowing will help reduce the weeds by increasing turfgrass density!

If seedheads on weeds, the collect the clipping, otherwise return clipping to soil, you are adding organic matter, nutrients, and water, the turfgrass plant ~ 80% water!

When mowing, don't excede the the recommended hoc for turfgrass, it can decrease density! I hear of alot of people cutting cool season turfgrass at 4 to 4.5" high, and that is too high for any cool season turfgrass. Stay in between the recommended hoc for your turfgrass!

Never remove more than 1/3 of leaf blade, if properly fertilized ( quality of fert) you should move almost every week, with few exceptions!

proper frequency of cut will increase turfgrass density!
Timothy J Murphy Specializing in Quality Turf
Bs in Plant and Soil Science
Almost 40 yrs exp., 20 as GC superintendent
Primarly work with cool season turf
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Old 09-06-2005, 11:57 AM
South Florida Lawns's Avatar
South Florida Lawns South Florida Lawns is offline
LawnSite Platinum Member
Join Date: Apr 2005
Location: usa
Posts: 4,788
This is especially true in the south

With St. Augustine, If you cut too low or scalp it, the grass will die back from the heat and sun. When this occurs it is not as thick and strong making a lawn prone to weeds and bugs.
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