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When to over seed?

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Joined: 9/24/2011
Location: St Louis, MO
Posts: 2
Posted: Sep/25/2011 6:18 AM PST

How long should I wait to over seed if I have already applied a 12-12-12 fertilizer or Scott's super turf builder? I used the Scotts five days ago, and it has been watered in well. I would like to aerate and over seed.
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Joined: 4/29/2008
Location: Westlake, La
Posts: 10091
Posted: Sep/26/2011 6:53 AM PST

I don't know when you should do that in your area-Maybe check in with your local AG center-or check their website for your state. Lots of good info on those sites!
Joined: 11/09/2010
Location: Chicago area - zone 5
Posts: 15
Posted: Sep/29/2011 9:26 AM PST

Hey figgarro165. Ken here with The Home Depot in the Chicago area.
You can go and aerate right now but don’t over seed. Since you applied
the Scotts, which is a 32-2-8, you need to wait for at least a month to over seed.
There is too much nitrogen (32) and it will burn the seed. Waiting a month will put you
almost into November, which will be too late to over seed. I would wait until
Spring. The next time you want to over seed make sure you have 4-6 weeks
since your last application of fertilizer. Good luck and take care.
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