The Moore American


February 15, 2012

Weed control is important in lawns

MOORE — Did your lawn fall under attack from weeds last year? Do you want to get a head start on controlling them this year? Or maybe you are thinking about doing your own lawn care instead of hiring out? It seems that weed control is on everyone’s mind. So, what to do about those pesky weeds in your green acres?

It is almost time to apply our first round of pre-emergent. A pre-emergent affects weed seed that is lying in wait ready to sprout. So it must be applied before you see any weeds present. The time to apply pre-emergent in the spring to control summer weeds can vary from year to year.

The best rule of thumb is to apply your pre-emergent when the forsythia in your area begins to bloom. This is the first thing to bloom in the spring. Forsythia is a large, woody shrub with bright yellow flowers along the stem. This striking shrub tends to bloom in late February to early March. With correct timing and application, a spring-applied pre-emergent can provide 80 to 90 percent control of common summer weeds.

What type of pre-emergent do you need? There are many products available to treat for summer blooming weeds now. But there are tons of different brand names and manufacturers.

The best way to look for a pre-emergent is to check the active ingredient on the bag. Some of the products I recommend contain these active ingredients: benefin, trifluralin, bensulide, dithiopyr, pendamethalin, oryzalin or prodiamine.

If you have problems with Sandbur, in particular, along with other grassy weeds, products containing oryzalinare are recommended.

In addition to a pre-emergent, correct fertilization can help your lawn thrive and outcompete weeds, especially Sandbur.

For Bermudagrass lawns, the ideal time to begin fertilization is May 1. If you are unsure what type of or how much fertilizer to use, I suggest getting a soil test.

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