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Why is Fall a Good Time to Kill Lawn Weeds?

September 11, 2013

Ground Ivy (Creeping Charlie), Clover, Chickweed, baby Dandelions from the seed that blew around last spring and lots of others tend to show up in your grass this time of year.  These weeds are in your lawn because the wetter, cooler fall weather is the ideal time for them to grow.  The good news is you can terminate them the same time you feed your lawn this fall with Scotts Turf Builder WinterGuard Fall Weed & Feed, or if you only have a few, you can spot spray them with Ortho Weed-B-Gon MAX plus Crabgrass Killer  OR Roundup For Lawns after you have fed your lawn with Turf Builder WinterGuard Fall Lawn Food (the lawn food without the weed control in it).

Fall is a great time to kill Ground Ivy, also known as Creeping Charlie

Fall is a great time to kill Ground Ivy, also known as Creeping Charlie

Why is this a good time?  Because they’re growing right now, weeds really soak up what you put down right down to the root, so they’re completely destroyed.  Plus, getting them now, before they spread, will dramatically reduce the number of weeds in your lawn next spring.  Put down Turf Builder WinterGuard Fall Weed & Feed on moist foliage on a day when rain is not expected and do not water the day you put it down.  Spreading first thing in the morning when your grass is covered in dew works very well.  All you need is the mid-day temperatures to get between 50 and 85 degrees.  After the granules have been on your lawn for 24 hours it is ok to water your lawn.

If you have St. Augustinegrass, use Scotts Bonus S Weed & Feed to control your weeds.  Give your lawn a good watering after spreading this product.

One last bit of advice:  If you put down grass seed this fall, you should not put down weed controls in those areas you seeded until after your new grass has been mowed 4 times.

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  1. Brian permalink

    Hi Ashton,

    Can you describe a schedule from this point forward for grass in the Northeast(NYC). I think I want to overseed and do a feeding before the first frost. Will I have time? What should I do first and what products do you recommend?

    • Hi Brian
      Seed as soon as you can and feed with Turf Builder Starter Lawn Food for New Grass. Then in about 4 to 6 weeks feed again with Turf Builder WinterGuard. In your area lawns really benefit from 2 to 3 feedings in fall and your last feeding can go down as late as mid November.

  2. victor permalink

    How long do I have to wait before to mow the lawn after Turf Builder Winterguard has been applied?

    • Hi Victor
      You can mow on your normal schedule after feeding with Turf Builder WinterGuard. With Turf Builder WinterGuard Weed & Feed you should wait at least a day or two after applying before mowing.

  3. caryn permalink

    I just put down Grubex as I noticed we are loaded! When can I put down the winter seed and weed? Thanks.

    • Hi Caryn
      If you meant Turf Builder WinterGuard Weed & Feed, you can put down a week after your last application. If you meant seed and weed control, you can seed anytime now, if you seed you can not put down a weed control for a month prior to seeding and after seeding you need to wait until your new grass has been mowed 4 times.

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